It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 998 248 is not a prime number.
For example, 998 248 can be divided by 2: 998 248 / 2 = 499 124.
For 998 248 to be a prime number, it would have been required that 998 248 has only two divisors, i.e., itself and 1.
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998 248 is an even number, because it is evenly divisible by 2: 998 248 / 2 = 499 124.
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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 998 248 is about 999.124.
Thus, the square root of 998 248 is not an integer, and therefore 998 248 is not a square number.
The square of a number (here 998 248) is the result of the product of this number (998 248) by itself (i.e., 998 248 × 998 248); the square of 998 248 is sometimes called "raising 998 248 to the power 2", or "998 248 squared".
The square of 998 248 is 996 499 069 504 because 998 248 × 998 248 = 998 2482 = 996 499 069 504.
As a consequence, 998 248 is the square root of 996 499 069 504.
The multiples of 998 248 are all integers evenly divisible by 998 248, that is all numbers such that the remainder of the division by 998 248 is zero. There are infinitely many multiples of 998 248. The smallest multiples of 998 248 are: