To write four million and forty-four in numbers, you would write it as 4,000,044. The comma is used to separate the millions place from the thousands place. The zero in the thousands place indicates that there are no thousands in this number. The final two digits, 44, represent the units place and the tens place.
46,000,304 -- commas are not necessary
In numbers: 1.440.000 In words: One Million, Four Hundred Forty Thousand
6,003,000.044
4,609,000,047
4,800,000