It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 990 248 is not a prime number.
For example, 990 248 can be divided by 2: 990 248 / 2 = 495 124.
For 990 248 to be a prime number, it would have been required that 990 248 has only two divisors, i.e., itself and 1.
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990 248 is an even number, because it is evenly divisible by 2: 990 248 / 2 = 495 124.
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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 990 248 is about 995.112.
Thus, the square root of 990 248 is not an integer, and therefore 990 248 is not a square number.
The square of a number (here 990 248) is the result of the product of this number (990 248) by itself (i.e., 990 248 × 990 248); the square of 990 248 is sometimes called "raising 990 248 to the power 2", or "990 248 squared".
The square of 990 248 is 980 591 101 504 because 990 248 × 990 248 = 990 2482 = 980 591 101 504.
As a consequence, 990 248 is the square root of 980 591 101 504.
The multiples of 990 248 are all integers evenly divisible by 990 248, that is all numbers such that the remainder of the division by 990 248 is zero. There are infinitely many multiples of 990 248. The smallest multiples of 990 248 are: