It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 538 988 is not a prime number.
For example, 538 988 can be divided by 2: 538 988 / 2 = 269 494.
For 538 988 to be a prime number, it would have been required that 538 988 has only two divisors, i.e., itself and 1.
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538 988 is an even number, because it is evenly divisible by 2: 538 988 / 2 = 269 494.
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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 538 988 is about 734.158.
Thus, the square root of 538 988 is not an integer, and therefore 538 988 is not a square number.
The square of a number (here 538 988) is the result of the product of this number (538 988) by itself (i.e., 538 988 × 538 988); the square of 538 988 is sometimes called "raising 538 988 to the power 2", or "538 988 squared".
The square of 538 988 is 290 508 064 144 because 538 988 × 538 988 = 538 9882 = 290 508 064 144.
As a consequence, 538 988 is the square root of 290 508 064 144.
The multiples of 538 988 are all integers evenly divisible by 538 988, that is all numbers such that the remainder of the division by 538 988 is zero. There are infinitely many multiples of 538 988. The smallest multiples of 538 988 are: