It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 397 241 is not a prime number.
For example, 397 241 can be divided by 13: 397 241 / 13 = 30 557.
For 397 241 to be a prime number, it would have been required that 397 241 has only two divisors, i.e., itself and 1.
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397 241 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 397 241 is about 630.271.
Thus, the square root of 397 241 is not an integer, and therefore 397 241 is not a square number.
The square of a number (here 397 241) is the result of the product of this number (397 241) by itself (i.e., 397 241 × 397 241); the square of 397 241 is sometimes called "raising 397 241 to the power 2", or "397 241 squared".
The square of 397 241 is 157 800 412 081 because 397 241 × 397 241 = 397 2412 = 157 800 412 081.
As a consequence, 397 241 is the square root of 157 800 412 081.
The multiples of 397 241 are all integers evenly divisible by 397 241, that is all numbers such that the remainder of the division by 397 241 is zero. There are infinitely many multiples of 397 241. The smallest multiples of 397 241 are: