Q: Is 1,397,821 a Prime Number?
A: No, 1,397,821 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 1397821 can be evenly divided by 1 31 67 673 2,077 20,863 45,091 and 1,397,821, with no remainder.
Since 1,397,821 cannot be divided by just 1 and 1,397,821, it is not a prime number.