It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 988 427 is not a prime number.
For example, 988 427 can be divided by 11: 988 427 / 11 = 89 857.
For 988 427 to be a prime number, it would have been required that 988 427 has only two divisors, i.e., itself and 1.
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988 427 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 988 427 is about 994.197.
Thus, the square root of 988 427 is not an integer, and therefore 988 427 is not a square number.
The square of a number (here 988 427) is the result of the product of this number (988 427) by itself (i.e., 988 427 × 988 427); the square of 988 427 is sometimes called "raising 988 427 to the power 2", or "988 427 squared".
The square of 988 427 is 976 987 934 329 because 988 427 × 988 427 = 988 4272 = 976 987 934 329.
As a consequence, 988 427 is the square root of 976 987 934 329.
The multiples of 988 427 are all integers evenly divisible by 988 427, that is all numbers such that the remainder of the division by 988 427 is zero. There are infinitely many multiples of 988 427. The smallest multiples of 988 427 are: