It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 994 988 is not a prime number.
For example, 994 988 can be divided by 2: 994 988 / 2 = 497 494.
For 994 988 to be a prime number, it would have been required that 994 988 has only two divisors, i.e., itself and 1.
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994 988 is an even number, because it is evenly divisible by 2: 994 988 / 2 = 497 494.
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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 994 988 is about 997.491.
Thus, the square root of 994 988 is not an integer, and therefore 994 988 is not a square number.
The square of a number (here 994 988) is the result of the product of this number (994 988) by itself (i.e., 994 988 × 994 988); the square of 994 988 is sometimes called "raising 994 988 to the power 2", or "994 988 squared".
The square of 994 988 is 990 001 120 144 because 994 988 × 994 988 = 994 9882 = 990 001 120 144.
As a consequence, 994 988 is the square root of 990 001 120 144.
The multiples of 994 988 are all integers evenly divisible by 994 988, that is all numbers such that the remainder of the division by 994 988 is zero. There are infinitely many multiples of 994 988. The smallest multiples of 994 988 are: