It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 397 167 216 is not a prime number.
For example, 397 167 216 can be divided by 2: 397 167 216 / 2 = 198 583 608.
For 397 167 216 to be a prime number, it would have been required that 397 167 216 has only two divisors, i.e., itself and 1.
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397 167 216 is an even number, because it is evenly divisible by 2: 397 167 216 / 2 = 198 583 608.
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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 397 167 216 is about 19 929.055.
Thus, the square root of 397 167 216 is not an integer, and therefore 397 167 216 is not a square number.
The square of a number (here 397 167 216) is the result of the product of this number (397 167 216) by itself (i.e., 397 167 216 × 397 167 216); the square of 397 167 216 is sometimes called "raising 397 167 216 to the power 2", or "397 167 216 squared".
The square of 397 167 216 is 157 741 797 465 190 656 because 397 167 216 × 397 167 216 = 397 167 2162 = 157 741 797 465 190 656.
As a consequence, 397 167 216 is the square root of 157 741 797 465 190 656.
397 167 216 is a number with 9 digits.
The multiples of 397 167 216 are all integers evenly divisible by 397 167 216, that is all numbers such that the remainder of the division by 397 167 216 is zero. There are infinitely many multiples of 397 167 216. The smallest multiples of 397 167 216 are: