It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 988 388 is not a prime number.
For example, 988 388 can be divided by 2: 988 388 / 2 = 494 194.
For 988 388 to be a prime number, it would have been required that 988 388 has only two divisors, i.e., itself and 1.
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988 388 is an even number, because it is evenly divisible by 2: 988 388 / 2 = 494 194.
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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 988 388 is about 994.177.
Thus, the square root of 988 388 is not an integer, and therefore 988 388 is not a square number.
The square of a number (here 988 388) is the result of the product of this number (988 388) by itself (i.e., 988 388 × 988 388); the square of 988 388 is sometimes called "raising 988 388 to the power 2", or "988 388 squared".
The square of 988 388 is 976 910 838 544 because 988 388 × 988 388 = 988 3882 = 976 910 838 544.
As a consequence, 988 388 is the square root of 976 910 838 544.
The multiples of 988 388 are all integers evenly divisible by 988 388, that is all numbers such that the remainder of the division by 988 388 is zero. There are infinitely many multiples of 988 388. The smallest multiples of 988 388 are: