Q: Is 399,504 a Prime Number?
A: No, 399,504 is not a prime number.
A prime number is a natural number, greater than one, that can only be divided by 1 and itself.
The number 399504 can be evenly divided by 1 2 3 4 6 7 8 12 14 16 21 24 28 29 41 42 48 56 58 82 84 87 112 116 123 164 168 174 203 232 246 287 328 336 348 406 464 492 574 609 656 696 812 861 984 1,148 1,189 1,218 1,392 1,624 1,722 1,968 2,296 2,378 2,436 3,248 3,444 3,567 4,592 4,756 4,872 6,888 7,134 8,323 9,512 9,744 13,776 14,268 16,646 19,024 24,969 28,536 33,292 49,938 57,072 66,584 99,876 133,168 199,752 and 399,504, with no remainder.
Since 399,504 cannot be divided by just 1 and 399,504, it is not a prime number.