It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 709 809 994 is not a prime number.
For example, 709 809 994 can be divided by 2: 709 809 994 / 2 = 354 904 997.
For 709 809 994 to be a prime number, it would have been required that 709 809 994 has only two divisors, i.e., itself and 1.
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709 809 994 is an even number, because it is evenly divisible by 2: 709 809 994 / 2 = 354 904 997.
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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 709 809 994 is about 26 642.260.
Thus, the square root of 709 809 994 is not an integer, and therefore 709 809 994 is not a square number.
The square of a number (here 709 809 994) is the result of the product of this number (709 809 994) by itself (i.e., 709 809 994 × 709 809 994); the square of 709 809 994 is sometimes called "raising 709 809 994 to the power 2", or "709 809 994 squared".
The square of 709 809 994 is 503 830 227 582 280 064 because 709 809 994 × 709 809 994 = 709 809 9942 = 503 830 227 582 280 064.
As a consequence, 709 809 994 is the square root of 503 830 227 582 280 064.
709 809 994 is a number with 9 digits.
The multiples of 709 809 994 are all integers evenly divisible by 709 809 994, that is all numbers such that the remainder of the division by 709 809 994 is zero. There are infinitely many multiples of 709 809 994. The smallest multiples of 709 809 994 are: