Q: Is 378,990 a Prime Number?
A: No, 378,990 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 378990 can be evenly divided by 1 2 3 5 6 9 10 15 18 30 45 90 4,211 8,422 12,633 21,055 25,266 37,899 42,110 63,165 75,798 126,330 189,495 and 378,990, with no remainder.
Since 378,990 cannot be divided by just 1 and 378,990, it is not a prime number.