IT would be written as four hundred million.
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6,400,000
271 400 000
It is 400000007.
To write four million in roman numeral, you would need 4,000 M's to equal 4,000,000 (one M = 1,000)Improved Answer:-It is: ((CD)) because it represents 10*1000*400 = 4,000,000
6 400 000 000