It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 397 497 is not a prime number.
For example, 397 497 can be divided by 3: 397 497 / 3 = 132 499.
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For 397 497 to be a prime number, it would have been required that 397 497 has only two divisors, i.e., itself and 1.
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397 497 is an odd number, because it is not evenly divisible by 2.
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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 397 497 is about 630.474.
Thus, the square root of 397 497 is not an integer, and therefore 397 497 is not a square number.
The square of a number (here 397 497) is the result of the product of this number (397 497) by itself (i.e., 397 497 × 397 497); the square of 397 497 is sometimes called "raising 397 497 to the power 2", or "397 497 squared".
The square of 397 497 is 158 003 865 009 because 397 497 × 397 497 = 397 4972 = 158 003 865 009.
As a consequence, 397 497 is the square root of 158 003 865 009.
The multiples of 397 497 are all integers evenly divisible by 397 497, that is all numbers such that the remainder of the division by 397 497 is zero. There are infinitely many multiples of 397 497. The smallest multiples of 397 497 are: