It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 80 997 309 is not a prime number.
For example, 80 997 309 can be divided by 3: 80 997 309 / 3 = 26 999 103.
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For 80 997 309 to be a prime number, it would have been required that 80 997 309 has only two divisors, i.e., itself and 1.
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80 997 309 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 80 997 309 is about 8 999.850.
Thus, the square root of 80 997 309 is not an integer, and therefore 80 997 309 is not a square number.
The square of a number (here 80 997 309) is the result of the product of this number (80 997 309) by itself (i.e., 80 997 309 × 80 997 309); the square of 80 997 309 is sometimes called "raising 80 997 309 to the power 2", or "80 997 309 squared".
The square of 80 997 309 is 6 560 564 065 241 481 because 80 997 309 × 80 997 309 = 80 997 3092 = 6 560 564 065 241 481.
As a consequence, 80 997 309 is the square root of 6 560 564 065 241 481.
80 997 309 is a number with 8 digits.
The multiples of 80 997 309 are all integers evenly divisible by 80 997 309, that is all numbers such that the remainder of the division by 80 997 309 is zero. There are infinitely many multiples of 80 997 309. The smallest multiples of 80 997 309 are: