It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 116 509 is not a prime number.
For example, 116 509 can be divided by 263: 116 509 / 263 = 443.
For 116 509 to be a prime number, it would have been required that 116 509 has only two divisors, i.e., itself and 1.
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116 509 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 116 509 is about 341.334.
Thus, the square root of 116 509 is not an integer, and therefore 116 509 is not a square number.
The square of a number (here 116 509) is the result of the product of this number (116 509) by itself (i.e., 116 509 × 116 509); the square of 116 509 is sometimes called "raising 116 509 to the power 2", or "116 509 squared".
The square of 116 509 is 13 574 347 081 because 116 509 × 116 509 = 116 5092 = 13 574 347 081.
As a consequence, 116 509 is the square root of 13 574 347 081.
The multiples of 116 509 are all integers evenly divisible by 116 509, that is all numbers such that the remainder of the division by 116 509 is zero. There are infinitely many multiples of 116 509. The smallest multiples of 116 509 are: