It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 511 338 979 is not a prime number.
For example, 511 338 979 can be divided by 1 489: 511 338 979 / 1489 = 343 411.
For 511 338 979 to be a prime number, it would have been required that 511 338 979 has only two divisors, i.e., itself and 1.
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511 338 979 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 511 338 979 is about 22 612.806.
Thus, the square root of 511 338 979 is not an integer, and therefore 511 338 979 is not a square number.
The square of a number (here 511 338 979) is the result of the product of this number (511 338 979) by itself (i.e., 511 338 979 × 511 338 979); the square of 511 338 979 is sometimes called "raising 511 338 979 to the power 2", or "511 338 979 squared".
The square of 511 338 979 is 261 467 551 444 762 432 because 511 338 979 × 511 338 979 = 511 338 9792 = 261 467 551 444 762 432.
As a consequence, 511 338 979 is the square root of 261 467 551 444 762 432.
511 338 979 is a number with 9 digits.
The multiples of 511 338 979 are all integers evenly divisible by 511 338 979, that is all numbers such that the remainder of the division by 511 338 979 is zero. There are infinitely many multiples of 511 338 979. The smallest multiples of 511 338 979 are: