It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 40 979 is not a prime number.
For example, 40 979 can be divided by 43: 40 979 / 43 = 953.
For 40 979 to be a prime number, it would have been required that 40 979 has only two divisors, i.e., itself and 1.
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40 979 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 40 979 is about 202.433.
Thus, the square root of 40 979 is not an integer, and therefore 40 979 is not a square number.
The square of a number (here 40 979) is the result of the product of this number (40 979) by itself (i.e., 40 979 × 40 979); the square of 40 979 is sometimes called "raising 40 979 to the power 2", or "40 979 squared".
The square of 40 979 is 1 679 278 441 because 40 979 × 40 979 = 40 9792 = 1 679 278 441.
As a consequence, 40 979 is the square root of 1 679 278 441.
The multiples of 40 979 are all integers evenly divisible by 40 979, that is all numbers such that the remainder of the division by 40 979 is zero. There are infinitely many multiples of 40 979. The smallest multiples of 40 979 are: