It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 396 742 413 is not a prime number.
For example, 396 742 413 can be divided by 3: 396 742 413 / 3 = 132 247 471.
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For 396 742 413 to be a prime number, it would have been required that 396 742 413 has only two divisors, i.e., itself and 1.
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396 742 413 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 396 742 413 is about 19 918.394.
Thus, the square root of 396 742 413 is not an integer, and therefore 396 742 413 is not a square number.
The square of a number (here 396 742 413) is the result of the product of this number (396 742 413) by itself (i.e., 396 742 413 × 396 742 413); the square of 396 742 413 is sometimes called "raising 396 742 413 to the power 2", or "396 742 413 squared".
The square of 396 742 413 is 157 404 542 273 062 560 because 396 742 413 × 396 742 413 = 396 742 4132 = 157 404 542 273 062 560.
As a consequence, 396 742 413 is the square root of 157 404 542 273 062 560.
396 742 413 is a number with 9 digits.
The multiples of 396 742 413 are all integers evenly divisible by 396 742 413, that is all numbers such that the remainder of the division by 396 742 413 is zero. There are infinitely many multiples of 396 742 413. The smallest multiples of 396 742 413 are: