It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 998 964 is not a prime number.
For example, 998 964 can be divided by 2: 998 964 / 2 = 499 482.
For 998 964 to be a prime number, it would have been required that 998 964 has only two divisors, i.e., itself and 1.
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998 964 is an even number, because it is evenly divisible by 2: 998 964 / 2 = 499 482.
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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 998 964 is about 999.482.
Thus, the square root of 998 964 is not an integer, and therefore 998 964 is not a square number.
The square of a number (here 998 964) is the result of the product of this number (998 964) by itself (i.e., 998 964 × 998 964); the square of 998 964 is sometimes called "raising 998 964 to the power 2", or "998 964 squared".
The square of 998 964 is 997 929 073 296 because 998 964 × 998 964 = 998 9642 = 997 929 073 296.
As a consequence, 998 964 is the square root of 997 929 073 296.
The multiples of 998 964 are all integers evenly divisible by 998 964, that is all numbers such that the remainder of the division by 998 964 is zero. There are infinitely many multiples of 998 964. The smallest multiples of 998 964 are: