It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 397 502 is not a prime number.
For example, 397 502 can be divided by 2: 397 502 / 2 = 198 751.
For 397 502 to be a prime number, it would have been required that 397 502 has only two divisors, i.e., itself and 1.
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397 502 is an even number, because it is evenly divisible by 2: 397 502 / 2 = 198 751.
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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 397 502 is about 630.478.
Thus, the square root of 397 502 is not an integer, and therefore 397 502 is not a square number.
The square of a number (here 397 502) is the result of the product of this number (397 502) by itself (i.e., 397 502 × 397 502); the square of 397 502 is sometimes called "raising 397 502 to the power 2", or "397 502 squared".
The square of 397 502 is 158 007 840 004 because 397 502 × 397 502 = 397 5022 = 158 007 840 004.
As a consequence, 397 502 is the square root of 158 007 840 004.
The multiples of 397 502 are all integers evenly divisible by 397 502, that is all numbers such that the remainder of the division by 397 502 is zero. There are infinitely many multiples of 397 502. The smallest multiples of 397 502 are: