Q: Is 1,398,999 a Prime Number?
A: No, 1,398,999 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 1398999 can be evenly divided by 1 3 7 21 31 49 93 147 217 307 651 921 1,519 2,149 4,557 6,447 9,517 15,043 28,551 45,129 66,619 199,857 466,333 and 1,398,999, with no remainder.
Since 1,398,999 cannot be divided by just 1 and 1,398,999, it is not a prime number.