It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 7 708 979 is not a prime number.
For example, 7 708 979 can be divided by 23: 7 708 979 / 23 = 335 173.
For 7 708 979 to be a prime number, it would have been required that 7 708 979 has only two divisors, i.e., itself and 1.
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7 708 979 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 7 708 979 is about 2 776.505.
Thus, the square root of 7 708 979 is not an integer, and therefore 7 708 979 is not a square number.
The square of a number (here 7 708 979) is the result of the product of this number (7 708 979) by itself (i.e., 7 708 979 × 7 708 979); the square of 7 708 979 is sometimes called "raising 7 708 979 to the power 2", or "7 708 979 squared".
The square of 7 708 979 is 59 428 357 222 441 because 7 708 979 × 7 708 979 = 7 708 9792 = 59 428 357 222 441.
As a consequence, 7 708 979 is the square root of 59 428 357 222 441.
The multiples of 7 708 979 are all integers evenly divisible by 7 708 979, that is all numbers such that the remainder of the division by 7 708 979 is zero. There are infinitely many multiples of 7 708 979. The smallest multiples of 7 708 979 are: