Q: Is 397,040 a Prime Number?
A: No, 397,040 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 397040 can be evenly divided by 1 2 4 5 7 8 10 14 16 20 28 35 40 56 70 80 112 140 280 560 709 1,418 2,836 3,545 4,963 5,672 7,090 9,926 11,344 14,180 19,852 24,815 28,360 39,704 49,630 56,720 79,408 99,260 198,520 and 397,040, with no remainder.
Since 397,040 cannot be divided by just 1 and 397,040, it is not a prime number.