It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 400 169 166 is not a prime number.
For example, 400 169 166 can be divided by 2: 400 169 166 / 2 = 200 084 583.
For 400 169 166 to be a prime number, it would have been required that 400 169 166 has only two divisors, i.e., itself and 1.
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400 169 166 is an even number, because it is evenly divisible by 2: 400 169 166 / 2 = 200 084 583.
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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 400 169 166 is about 20 004.229.
Thus, the square root of 400 169 166 is not an integer, and therefore 400 169 166 is not a square number.
The square of a number (here 400 169 166) is the result of the product of this number (400 169 166) by itself (i.e., 400 169 166 × 400 169 166); the square of 400 169 166 is sometimes called "raising 400 169 166 to the power 2", or "400 169 166 squared".
The square of 400 169 166 is 160 135 361 417 135 552 because 400 169 166 × 400 169 166 = 400 169 1662 = 160 135 361 417 135 552.
As a consequence, 400 169 166 is the square root of 160 135 361 417 135 552.
400 169 166 is a number with 9 digits.
The multiples of 400 169 166 are all integers evenly divisible by 400 169 166, that is all numbers such that the remainder of the division by 400 169 166 is zero. There are infinitely many multiples of 400 169 166. The smallest multiples of 400 169 166 are: