It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 988 416 is not a prime number.
For example, 988 416 can be divided by 2: 988 416 / 2 = 494 208.
For 988 416 to be a prime number, it would have been required that 988 416 has only two divisors, i.e., itself and 1.
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988 416 is an even number, because it is evenly divisible by 2: 988 416 / 2 = 494 208.
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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 988 416 is about 994.191.
Thus, the square root of 988 416 is not an integer, and therefore 988 416 is not a square number.
The square of a number (here 988 416) is the result of the product of this number (988 416) by itself (i.e., 988 416 × 988 416); the square of 988 416 is sometimes called "raising 988 416 to the power 2", or "988 416 squared".
The square of 988 416 is 976 966 189 056 because 988 416 × 988 416 = 988 4162 = 976 966 189 056.
As a consequence, 988 416 is the square root of 976 966 189 056.
The multiples of 988 416 are all integers evenly divisible by 988 416, that is all numbers such that the remainder of the division by 988 416 is zero. There are infinitely many multiples of 988 416. The smallest multiples of 988 416 are: