Q: Is 538,398 a Prime Number?
A: No, 538,398 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 538398 can be evenly divided by 1 2 3 6 7 9 14 18 21 42 63 126 4,273 8,546 12,819 25,638 29,911 38,457 59,822 76,914 89,733 179,466 269,199 and 538,398, with no remainder.
Since 538,398 cannot be divided by just 1 and 538,398, it is not a prime number.