Q: Is 398,560 a Prime Number?
A: No, 398,560 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 398560 can be evenly divided by 1 2 4 5 8 10 16 20 32 40 47 53 80 94 106 160 188 212 235 265 376 424 470 530 752 848 940 1,060 1,504 1,696 1,880 2,120 2,491 3,760 4,240 4,982 7,520 8,480 9,964 12,455 19,928 24,910 39,856 49,820 79,712 99,640 199,280 and 398,560, with no remainder.
Since 398,560 cannot be divided by just 1 and 398,560, it is not a prime number.