It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 977 398 is not a prime number.
For example, 977 398 can be divided by 2: 977 398 / 2 = 488 699.
For 977 398 to be a prime number, it would have been required that 977 398 has only two divisors, i.e., itself and 1.
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977 398 is an even number, because it is evenly divisible by 2: 977 398 / 2 = 488 699.
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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 977 398 is about 988.634.
Thus, the square root of 977 398 is not an integer, and therefore 977 398 is not a square number.
The square of a number (here 977 398) is the result of the product of this number (977 398) by itself (i.e., 977 398 × 977 398); the square of 977 398 is sometimes called "raising 977 398 to the power 2", or "977 398 squared".
The square of 977 398 is 955 306 850 404 because 977 398 × 977 398 = 977 3982 = 955 306 850 404.
As a consequence, 977 398 is the square root of 955 306 850 404.
The multiples of 977 398 are all integers evenly divisible by 977 398, that is all numbers such that the remainder of the division by 977 398 is zero. There are infinitely many multiples of 977 398. The smallest multiples of 977 398 are: