It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 988 738 is not a prime number.
For example, 988 738 can be divided by 2: 988 738 / 2 = 494 369.
For 988 738 to be a prime number, it would have been required that 988 738 has only two divisors, i.e., itself and 1.
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988 738 is an even number, because it is evenly divisible by 2: 988 738 / 2 = 494 369.
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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 988 738 is about 994.353.
Thus, the square root of 988 738 is not an integer, and therefore 988 738 is not a square number.
The square of a number (here 988 738) is the result of the product of this number (988 738) by itself (i.e., 988 738 × 988 738); the square of 988 738 is sometimes called "raising 988 738 to the power 2", or "988 738 squared".
The square of 988 738 is 977 602 832 644 because 988 738 × 988 738 = 988 7382 = 977 602 832 644.
As a consequence, 988 738 is the square root of 977 602 832 644.
The multiples of 988 738 are all integers evenly divisible by 988 738, that is all numbers such that the remainder of the division by 988 738 is zero. There are infinitely many multiples of 988 738. The smallest multiples of 988 738 are: