It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 490 197 898 is not a prime number.
For example, 490 197 898 can be divided by 2: 490 197 898 / 2 = 245 098 949.
For 490 197 898 to be a prime number, it would have been required that 490 197 898 has only two divisors, i.e., itself and 1.
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490 197 898 is an even number, because it is evenly divisible by 2: 490 197 898 / 2 = 245 098 949.
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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 490 197 898 is about 22 140.413.
Thus, the square root of 490 197 898 is not an integer, and therefore 490 197 898 is not a square number.
The square of a number (here 490 197 898) is the result of the product of this number (490 197 898) by itself (i.e., 490 197 898 × 490 197 898); the square of 490 197 898 is sometimes called "raising 490 197 898 to the power 2", or "490 197 898 squared".
The square of 490 197 898 is 240 293 979 203 618 400 because 490 197 898 × 490 197 898 = 490 197 8982 = 240 293 979 203 618 400.
As a consequence, 490 197 898 is the square root of 240 293 979 203 618 400.
490 197 898 is a number with 9 digits.
The multiples of 490 197 898 are all integers evenly divisible by 490 197 898, that is all numbers such that the remainder of the division by 490 197 898 is zero. There are infinitely many multiples of 490 197 898. The smallest multiples of 490 197 898 are: