It is 4002.
Four thousand and two is 4002.
MMDIV
Seven thousand six hundred and four in numerals is 7,604.
The numerals for the number number two million four hundred one thousand two are written as: 2,401,002
one thousand, five hundred, sixty four & two
Two hundred thousand is 200,000
6406004
MM
____ MCD
401,000
3,854 Three thousand, eight hundred and fifty four.
Four million in Roman numerals is MMMM but with an horizontal bar above each of the four numerals to indicate multiplication by a thousand (4000*1000 = 4000000)