It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 490 002 388 is not a prime number.
For example, 490 002 388 can be divided by 2: 490 002 388 / 2 = 245 001 194.
For 490 002 388 to be a prime number, it would have been required that 490 002 388 has only two divisors, i.e., itself and 1.
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490 002 388 is an even number, because it is evenly divisible by 2: 490 002 388 / 2 = 245 001 194.
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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 490 002 388 is about 22 135.998.
Thus, the square root of 490 002 388 is not an integer, and therefore 490 002 388 is not a square number.
The square of a number (here 490 002 388) is the result of the product of this number (490 002 388) by itself (i.e., 490 002 388 × 490 002 388); the square of 490 002 388 is sometimes called "raising 490 002 388 to the power 2", or "490 002 388 squared".
The square of 490 002 388 is 240 102 340 245 702 528 because 490 002 388 × 490 002 388 = 490 002 3882 = 240 102 340 245 702 528.
As a consequence, 490 002 388 is the square root of 240 102 340 245 702 528.
490 002 388 is a number with 9 digits.
The multiples of 490 002 388 are all integers evenly divisible by 490 002 388, that is all numbers such that the remainder of the division by 490 002 388 is zero. There are infinitely many multiples of 490 002 388. The smallest multiples of 490 002 388 are: