Q: Is 439,428 a Prime Number?
A: No, 439,428 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 439428 can be evenly divided by 1 2 3 4 6 11 12 22 33 44 66 132 3,329 6,658 9,987 13,316 19,974 36,619 39,948 73,238 109,857 146,476 219,714 and 439,428, with no remainder.
Since 439,428 cannot be divided by just 1 and 439,428, it is not a prime number.