It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 8 759 909 is not a prime number.
For example, 8 759 909 can be divided by 71: 8 759 909 / 71 = 123 379.
For 8 759 909 to be a prime number, it would have been required that 8 759 909 has only two divisors, i.e., itself and 1.
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8 759 909 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 8 759 909 is about 2 959.714.
Thus, the square root of 8 759 909 is not an integer, and therefore 8 759 909 is not a square number.
The square of a number (here 8 759 909) is the result of the product of this number (8 759 909) by itself (i.e., 8 759 909 × 8 759 909); the square of 8 759 909 is sometimes called "raising 8 759 909 to the power 2", or "8 759 909 squared".
The square of 8 759 909 is 76 736 005 688 281 because 8 759 909 × 8 759 909 = 8 759 9092 = 76 736 005 688 281.
As a consequence, 8 759 909 is the square root of 76 736 005 688 281.
The multiples of 8 759 909 are all integers evenly divisible by 8 759 909, that is all numbers such that the remainder of the division by 8 759 909 is zero. There are infinitely many multiples of 8 759 909. The smallest multiples of 8 759 909 are: