Q: Is 4,389 a Prime Number?
A: No, 4,389 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 4389 can be evenly divided by 1 3 7 11 19 21 33 57 77 133 209 231 399 627 1,463 and 4,389, with no remainder.
Since 4,389 cannot be divided by just 1 and 4,389, it is not a prime number.