It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 397 938 197 is not a prime number.
For example, 397 938 197 can be divided by 61: 397 938 197 / 61 = 6 523 577.
For 397 938 197 to be a prime number, it would have been required that 397 938 197 has only two divisors, i.e., itself and 1.
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397 938 197 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 397 938 197 is about 19 948.388.
Thus, the square root of 397 938 197 is not an integer, and therefore 397 938 197 is not a square number.
The square of a number (here 397 938 197) is the result of the product of this number (397 938 197) by itself (i.e., 397 938 197 × 397 938 197); the square of 397 938 197 is sometimes called "raising 397 938 197 to the power 2", or "397 938 197 squared".
The square of 397 938 197 is 158 354 808 631 610 816 because 397 938 197 × 397 938 197 = 397 938 1972 = 158 354 808 631 610 816.
As a consequence, 397 938 197 is the square root of 158 354 808 631 610 816.
397 938 197 is a number with 9 digits.
The multiples of 397 938 197 are all integers evenly divisible by 397 938 197, that is all numbers such that the remainder of the division by 397 938 197 is zero. There are infinitely many multiples of 397 938 197. The smallest multiples of 397 938 197 are: