Q: Is 378,409 a Prime Number?
A: No, 378,409 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 378409 can be evenly divided by 1 227 1,667 and 378,409, with no remainder.
Since 378,409 cannot be divided by just 1 and 378,409, it is not a prime number.