It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 400 602 007 is not a prime number.
For example, 400 602 007 can be divided by 13: 400 602 007 / 13 = 30 815 539.
For 400 602 007 to be a prime number, it would have been required that 400 602 007 has only two divisors, i.e., itself and 1.
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400 602 007 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 400 602 007 is about 20 015.045.
Thus, the square root of 400 602 007 is not an integer, and therefore 400 602 007 is not a square number.
The square of a number (here 400 602 007) is the result of the product of this number (400 602 007) by itself (i.e., 400 602 007 × 400 602 007); the square of 400 602 007 is sometimes called "raising 400 602 007 to the power 2", or "400 602 007 squared".
The square of 400 602 007 is 160 481 968 012 428 064 because 400 602 007 × 400 602 007 = 400 602 0072 = 160 481 968 012 428 064.
As a consequence, 400 602 007 is the square root of 160 481 968 012 428 064.
400 602 007 is a number with 9 digits.
The multiples of 400 602 007 are all integers evenly divisible by 400 602 007, that is all numbers such that the remainder of the division by 400 602 007 is zero. There are infinitely many multiples of 400 602 007. The smallest multiples of 400 602 007 are: