1 and 9.
Itself 9 which is an integer or a whole number but its factors are 1, 3 and 9
There are nine.
That would be 99,999. It is written out as ninety-nine thousand, nine hundred ninety-nine.
The factors of nine are one, three, and nine. A factor is a whole number that when multiplied by another number equals the number you are factoring. So, the repeated multiplication for nine is 3 times 3.