pre_text: part ii item 5 . market for registrant 2019s common equity , related stockholder matters and issuer purchases of equity securities the following table presents reported quarterly high and low per share sale prices of our common stock on the new york stock exchange ( 201cnyse 201d ) for the years 2008 and 2007. .
post_text: on february 13 , 2009 , the closing price of our common stock was $ 28.85 per share as reported on the nyse . as of february 13 , 2009 , we had 397097677 outstanding shares of common stock and 499 registered holders . dividends we have never paid a dividend on our common stock . we anticipate that we may retain future earnings , if any , to fund the development and growth of our business . the indentures governing our 7.50% ( 7.50 % ) senior notes due 2012 ( 201c7.50% ( 201c7.50 % ) notes 201d ) and our 7.125% ( 7.125 % ) senior notes due 2012 ( 201c7.125% ( 201c7.125 % ) notes 201d ) may prohibit us from paying dividends to our stockholders unless we satisfy certain financial covenants . the loan agreement for our revolving credit facility and term loan , and the indentures governing the terms of our 7.50% ( 7.50 % ) notes and 7.125% ( 7.125 % ) notes contain covenants that restrict our ability to pay dividends unless certain financial covenants are satisfied . in addition , while spectrasite and its subsidiaries are classified as unrestricted subsidiaries under the indentures for our 7.50% ( 7.50 % ) notes and 7.125% ( 7.125 % ) notes , certain of spectrasite 2019s subsidiaries are subject to restrictions on the amount of cash that they can distribute to us under the loan agreement related to our securitization transaction . for more information about the restrictions under the loan agreement for the revolving credit facility and term loan , our notes indentures and the loan agreement related to our securitization transaction , see item 7 of this annual report under the caption 201cmanagement 2019s discussion and analysis of financial condition and results of operations 2014liquidity and capital resources 2014factors affecting sources of liquidity 201d and note 6 to our consolidated financial statements included in this annual report. .
table: 2008 High Low
table: Quarter ended March 31 $42.72 $32.10
table: Quarter ended June 30 46.10 38.53
table: Quarter ended September 30 43.43 31.89
table: Quarter ended December 31 37.28 19.35
table: 2007 High Low
table: Quarter ended March 31 $41.31 $36.63
table: Quarter ended June 30 43.84 37.64
table: Quarter ended September 30 45.45 36.34
table: Quarter ended December 31 46.53 40.08
question: Analyse this data from a financial earnings document. what is the average number of common stock shares per register holder as of february 13 , 2009?