It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 388 214 is not a prime number.
For example, 388 214 can be divided by 2: 388 214 / 2 = 194 107.
For 388 214 to be a prime number, it would have been required that 388 214 has only two divisors, i.e., itself and 1.
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388 214 is an even number, because it is evenly divisible by 2: 388 214 / 2 = 194 107.
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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 388 214 is about 623.068.
Thus, the square root of 388 214 is not an integer, and therefore 388 214 is not a square number.
The square of a number (here 388 214) is the result of the product of this number (388 214) by itself (i.e., 388 214 × 388 214); the square of 388 214 is sometimes called "raising 388 214 to the power 2", or "388 214 squared".
The square of 388 214 is 150 710 109 796 because 388 214 × 388 214 = 388 2142 = 150 710 109 796.
As a consequence, 388 214 is the square root of 150 710 109 796.
The multiples of 388 214 are all integers evenly divisible by 388 214, that is all numbers such that the remainder of the division by 388 214 is zero. There are infinitely many multiples of 388 214. The smallest multiples of 388 214 are: