Q: Is 400,823 a Prime Number?
A: Yes, 400,823 is a prime number.
A prime number is a natural number, greater than one, that can only be divided by 1 and itself.
The number 400823 can be evenly divided by 1 and 400,823, with no remainder.
Since 400,823 can be divided by just 1 and 400,823, it is a prime number.