Q: Is 209,475 a Prime Number?
A: No, 209,475 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 209475 can be evenly divided by 1 3 5 7 9 15 19 21 25 35 45 49 57 63 75 95 105 133 147 171 175 225 245 285 315 399 441 475 525 665 735 855 931 1,197 1,225 1,425 1,575 1,995 2,205 2,793 3,325 3,675 4,275 4,655 5,985 8,379 9,975 11,025 13,965 23,275 29,925 41,895 69,825 and 209,475, with no remainder.
Since 209,475 cannot be divided by just 1 and 209,475, it is not a prime number.