It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 998 499 is not a prime number.
For example, 998 499 can be divided by 3: 998 499 / 3 = 332 833.
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For 998 499 to be a prime number, it would have been required that 998 499 has only two divisors, i.e., itself and 1.
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998 499 is an odd number, because it is not evenly divisible by 2.
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A number is a perfect square (or a square number) if its square root is an integer; that is to say, it is the product of an integer with itself. Here, the square root of 998 499 is about 999.249.
Thus, the square root of 998 499 is not an integer, and therefore 998 499 is not a square number.
The square of a number (here 998 499) is the result of the product of this number (998 499) by itself (i.e., 998 499 × 998 499); the square of 998 499 is sometimes called "raising 998 499 to the power 2", or "998 499 squared".
The square of 998 499 is 997 000 253 001 because 998 499 × 998 499 = 998 4992 = 997 000 253 001.
As a consequence, 998 499 is the square root of 997 000 253 001.
The multiples of 998 499 are all integers evenly divisible by 998 499, that is all numbers such that the remainder of the division by 998 499 is zero. There are infinitely many multiples of 998 499. The smallest multiples of 998 499 are: