Q: Is 397,920 a Prime Number?
A: No, 397,920 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 397920 can be evenly divided by 1 2 3 4 5 6 8 10 12 15 16 20 24 30 32 40 48 60 80 96 120 160 240 480 829 1,658 2,487 3,316 4,145 4,974 6,632 8,290 9,948 12,435 13,264 16,580 19,896 24,870 26,528 33,160 39,792 49,740 66,320 79,584 99,480 132,640 198,960 and 397,920, with no remainder.
Since 397,920 cannot be divided by just 1 and 397,920, it is not a prime number.