Please answer the given financial question based on the context.
Context: visa inc . notes to consolidated financial statements 2014 ( continued ) september 30 , 2008 ( in millions , except as noted ) require the company to redeem all class c ( series ii ) common stock at any time after december 4 , 2008 . therefore , in march 2008 , the company reclassified all class c ( series ii ) common stock at its then fair value of $ 1.125 billion to temporary equity on the company 2019s consolidated balance sheet with a corresponding reduction in additional paid-in-capital of $ 1.104 billion and accumulated income ( deficit ) of $ 21 million . the company accreted this stock to its redemption price of $ 1.146 billion , adjusted for dividends and certain other adjustments , on a straight-line basis , from march 2008 to october 2008 through accumulated income . see note 4 2014visa europe for a roll-forward of the balance of class c ( series ii ) common stock . the following table sets forth the number of shares of common stock issued and outstanding by class at september 30 , 2008 and the impact of the october 2008 redemptions and subsequent conversion of the remaining outstanding shares of class c ( series iii and series iv ) to class c ( series i ) shares and the number of shares of common stock issued and outstanding after the october 2008 redemptions in total and on as converted basis : shares issued and outstanding september 30 , october 2008 redemptions conversion to class c ( series i ) following immediate conversion to class c ( series i ) converted post october redemptions .
|shares issued and outstanding|at september 30 2008|october 2008 redemptions|conversion to class c ( series i )|following immediate conversion to class c ( series i )|as converted post october 2008 redemptions|
|class a common stock|447746261|2014|2014|447746261|447746261|
|class b common stock ( 1 )|245513385|2014|2014|245513385|175367482|
|class c ( series i ) common stock|124097105|2014|27499203|151596308|151596308|
|class c ( series ii ) common stock|79748857|-79748857 ( 79748857 )|2014|2014|2014|
|class c ( series iii ) common stock|62213201|-35263585 ( 35263585 )|-26949616 ( 26949616 )|2014|2014|
|class c ( series iv ) common stock|549587|2014|-549587 ( 549587 )|2014|2014|
|total shares issued and outstanding|959868396|-115012442 ( 115012442 )|2014|844855954|774710051|
( 1 ) all voting and dividend payment rights are based on the number of shares held multiplied by the applicable conversion rate in effect on the record date , as discussed below . subsequent to the ipo and as a result of the initial funding of the litigation escrow account , the conversion rate applicable to class b common stock was approximately 0.71 shares of class a common stock for each share of class b common stock . special ipo cash and stock dividends received from cost method investees , net of tax several of the company 2019s cost method investees are also holders of class c ( series i ) common stock and therefore participated in the initial share redemption in march 2008 . certain of these investees elected to declare a special cash dividend to return to their owners on a pro rata basis , the proceeds received as a result of the redemption of a portion of their class c ( series i ) common stock . the dividends represent the return of redemption proceeds . as a result of the company 2019s ownership interest in these cost method investees , the company received approximately $ 21 million of special dividends from these investees during the third fiscal quarter and recorded a receivable of $ 8 million in prepaid and other assets on its consolidated balance sheet at september 30 , 2008 for a dividend declared by these investees during the fourth fiscal quarter . in addition , another investee elected to distribute its entire ownership in the company 2019s class c ( series i ) common stock through the distribution of these shares to its investors on a pro rata basis . as a result , the company received 525443 shares of its own class c ( series i ) common stock during the fourth fiscal quarter and recorded $ 35 million in treasury stock . the value of the treasury stock was calculated based on sales prices of other recent class c ( series i ) stock transactions by other class c .
Question: what portion of the total shares issued and outstanding are class a common stock?
Answer:
0.46647