40000000
To write out four hundred million, you would write 400,000,000. This is the numerical representation of four hundred million in standard form. In words, you would write it as "Four hundred million."
Four Hundred and thirty eightor438
4,400,400
four hundred dollars
400,504
One hundred four thousand, four hundred.
$400,405
400,624
304,020,003
1450
400,000,704,000
999.004