It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 509 497 698 is not a prime number.
For example, 509 497 698 can be divided by 2: 509 497 698 / 2 = 254 748 849.
For 509 497 698 to be a prime number, it would have been required that 509 497 698 has only two divisors, i.e., itself and 1.
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509 497 698 is an even number, because it is evenly divisible by 2: 509 497 698 / 2 = 254 748 849.
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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 509 497 698 is about 22 572.056.
Thus, the square root of 509 497 698 is not an integer, and therefore 509 497 698 is not a square number.
The square of a number (here 509 497 698) is the result of the product of this number (509 497 698) by itself (i.e., 509 497 698 × 509 497 698); the square of 509 497 698 is sometimes called "raising 509 497 698 to the power 2", or "509 497 698 squared".
The square of 509 497 698 is 259 587 904 267 299 200 because 509 497 698 × 509 497 698 = 509 497 6982 = 259 587 904 267 299 200.
As a consequence, 509 497 698 is the square root of 259 587 904 267 299 200.
509 497 698 is a number with 9 digits.
The multiples of 509 497 698 are all integers evenly divisible by 509 497 698, that is all numbers such that the remainder of the division by 509 497 698 is zero. There are infinitely many multiples of 509 497 698. The smallest multiples of 509 497 698 are: