It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 988 878 is not a prime number.
For example, 988 878 can be divided by 2: 988 878 / 2 = 494 439.
For 988 878 to be a prime number, it would have been required that 988 878 has only two divisors, i.e., itself and 1.
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988 878 is an even number, because it is evenly divisible by 2: 988 878 / 2 = 494 439.
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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 988 878 is about 994.423.
Thus, the square root of 988 878 is not an integer, and therefore 988 878 is not a square number.
The square of a number (here 988 878) is the result of the product of this number (988 878) by itself (i.e., 988 878 × 988 878); the square of 988 878 is sometimes called "raising 988 878 to the power 2", or "988 878 squared".
The square of 988 878 is 977 879 698 884 because 988 878 × 988 878 = 988 8782 = 977 879 698 884.
As a consequence, 988 878 is the square root of 977 879 698 884.
The multiples of 988 878 are all integers evenly divisible by 988 878, that is all numbers such that the remainder of the division by 988 878 is zero. There are infinitely many multiples of 988 878. The smallest multiples of 988 878 are: