How do you write 4,000,000 in words?

How to write $4,000,000 on a check

The most common reason to write 4,000,000 as four million would be if you're writing a check for $4,000,000. Just below the "pay to the order of" line, you would write the dollar amount in words. In this case, you might write "four million and 00/100 dollars."