It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 9 418 739 is not a prime number.
For example, 9 418 739 can be divided by 11: 9 418 739 / 11 = 856 249.
For 9 418 739 to be a prime number, it would have been required that 9 418 739 has only two divisors, i.e., itself and 1.
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9 418 739 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 9 418 739 is about 3 068.996.
Thus, the square root of 9 418 739 is not an integer, and therefore 9 418 739 is not a square number.
The square of a number (here 9 418 739) is the result of the product of this number (9 418 739) by itself (i.e., 9 418 739 × 9 418 739); the square of 9 418 739 is sometimes called "raising 9 418 739 to the power 2", or "9 418 739 squared".
The square of 9 418 739 is 88 712 644 350 121 because 9 418 739 × 9 418 739 = 9 418 7392 = 88 712 644 350 121.
As a consequence, 9 418 739 is the square root of 88 712 644 350 121.
The multiples of 9 418 739 are all integers evenly divisible by 9 418 739, that is all numbers such that the remainder of the division by 9 418 739 is zero. There are infinitely many multiples of 9 418 739. The smallest multiples of 9 418 739 are: