It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 397 167 861 is not a prime number.
For example, 397 167 861 can be divided by 3: 397 167 861 / 3 = 132 389 287.
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For 397 167 861 to be a prime number, it would have been required that 397 167 861 has only two divisors, i.e., itself and 1.
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397 167 861 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 397 167 861 is about 19 929.071.
Thus, the square root of 397 167 861 is not an integer, and therefore 397 167 861 is not a square number.
The square of a number (here 397 167 861) is the result of the product of this number (397 167 861) by itself (i.e., 397 167 861 × 397 167 861); the square of 397 167 861 is sometimes called "raising 397 167 861 to the power 2", or "397 167 861 squared".
The square of 397 167 861 is 157 742 309 811 315 328 because 397 167 861 × 397 167 861 = 397 167 8612 = 157 742 309 811 315 328.
As a consequence, 397 167 861 is the square root of 157 742 309 811 315 328.
397 167 861 is a number with 9 digits.
The multiples of 397 167 861 are all integers evenly divisible by 397 167 861, that is all numbers such that the remainder of the division by 397 167 861 is zero. There are infinitely many multiples of 397 167 861. The smallest multiples of 397 167 861 are: