It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 397 496 is not a prime number.
For example, 397 496 can be divided by 2: 397 496 / 2 = 198 748.
For 397 496 to be a prime number, it would have been required that 397 496 has only two divisors, i.e., itself and 1.
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397 496 is an even number, because it is evenly divisible by 2: 397 496 / 2 = 198 748.
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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 397 496 is about 630.473.
Thus, the square root of 397 496 is not an integer, and therefore 397 496 is not a square number.
The square of a number (here 397 496) is the result of the product of this number (397 496) by itself (i.e., 397 496 × 397 496); the square of 397 496 is sometimes called "raising 397 496 to the power 2", or "397 496 squared".
The square of 397 496 is 158 003 070 016 because 397 496 × 397 496 = 397 4962 = 158 003 070 016.
As a consequence, 397 496 is the square root of 158 003 070 016.
The multiples of 397 496 are all integers evenly divisible by 397 496, that is all numbers such that the remainder of the division by 397 496 is zero. There are infinitely many multiples of 397 496. The smallest multiples of 397 496 are: