It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 7 988 476 is not a prime number.
For example, 7 988 476 can be divided by 2: 7 988 476 / 2 = 3 994 238.
For 7 988 476 to be a prime number, it would have been required that 7 988 476 has only two divisors, i.e., itself and 1.
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7 988 476 is an even number, because it is evenly divisible by 2: 7 988 476 / 2 = 3 994 238.
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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 7 988 476 is about 2 826.389.
Thus, the square root of 7 988 476 is not an integer, and therefore 7 988 476 is not a square number.
The square of a number (here 7 988 476) is the result of the product of this number (7 988 476) by itself (i.e., 7 988 476 × 7 988 476); the square of 7 988 476 is sometimes called "raising 7 988 476 to the power 2", or "7 988 476 squared".
The square of 7 988 476 is 63 815 748 802 576 because 7 988 476 × 7 988 476 = 7 988 4762 = 63 815 748 802 576.
As a consequence, 7 988 476 is the square root of 63 815 748 802 576.
The multiples of 7 988 476 are all integers evenly divisible by 7 988 476, that is all numbers such that the remainder of the division by 7 988 476 is zero. There are infinitely many multiples of 7 988 476. The smallest multiples of 7 988 476 are: