Q: Is 428,589 a Prime Number?
A: No, 428,589 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 428589 can be evenly divided by 1 3 7 9 21 63 6,803 20,409 47,621 61,227 142,863 and 428,589, with no remainder.
Since 428,589 cannot be divided by just 1 and 428,589, it is not a prime number.