Q: Is 4,078,791 a Prime Number?
A: No, 4,078,791 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 4078791 can be evenly divided by 1 3 9 453,199 1,359,597 and 4,078,791, with no remainder.
Since 4,078,791 cannot be divided by just 1 and 4,078,791, it is not a prime number.