It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 80 408 974 is not a prime number.
For example, 80 408 974 can be divided by 2: 80 408 974 / 2 = 40 204 487.
For 80 408 974 to be a prime number, it would have been required that 80 408 974 has only two divisors, i.e., itself and 1.
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80 408 974 is an even number, because it is evenly divisible by 2: 80 408 974 / 2 = 40 204 487.
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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 80 408 974 is about 8 967.105.
Thus, the square root of 80 408 974 is not an integer, and therefore 80 408 974 is not a square number.
The square of a number (here 80 408 974) is the result of the product of this number (80 408 974) by itself (i.e., 80 408 974 × 80 408 974); the square of 80 408 974 is sometimes called "raising 80 408 974 to the power 2", or "80 408 974 squared".
The square of 80 408 974 is 6 465 603 099 732 676 because 80 408 974 × 80 408 974 = 80 408 9742 = 6 465 603 099 732 676.
As a consequence, 80 408 974 is the square root of 6 465 603 099 732 676.
80 408 974 is a number with 8 digits.
The multiples of 80 408 974 are all integers evenly divisible by 80 408 974, that is all numbers such that the remainder of the division by 80 408 974 is zero. There are infinitely many multiples of 80 408 974. The smallest multiples of 80 408 974 are: