It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 509 349 109 is not a prime number.
For example, 509 349 109 can be divided by 41: 509 349 109 / 41 = 12 423 149.
For 509 349 109 to be a prime number, it would have been required that 509 349 109 has only two divisors, i.e., itself and 1.
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509 349 109 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 509 349 109 is about 22 568.764.
Thus, the square root of 509 349 109 is not an integer, and therefore 509 349 109 is not a square number.
The square of a number (here 509 349 109) is the result of the product of this number (509 349 109) by itself (i.e., 509 349 109 × 509 349 109); the square of 509 349 109 is sometimes called "raising 509 349 109 to the power 2", or "509 349 109 squared".
The square of 509 349 109 is 259 436 514 839 093 888 because 509 349 109 × 509 349 109 = 509 349 1092 = 259 436 514 839 093 888.
As a consequence, 509 349 109 is the square root of 259 436 514 839 093 888.
509 349 109 is a number with 9 digits.
The multiples of 509 349 109 are all integers evenly divisible by 509 349 109, that is all numbers such that the remainder of the division by 509 349 109 is zero. There are infinitely many multiples of 509 349 109. The smallest multiples of 509 349 109 are: