Is 400990 a prime number?

400 990 is an even number, because it is evenly divisible by 2: 400 990 / 2 = 200 495.

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• What is an even number?

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 400 990 is about 633.238.

Thus, the square root of 400 990 is not an integer, and therefore 400 990 is not a square number.

The square of a number (here 400 990) is the result of the product of this number (400 990) by itself (i.e., 400 990 × 400 990); the square of 400 990 is sometimes called "raising 400 990 to the power 2", or "400 990 squared".

The square of 400 990 is 160 792 980 100 because 400 990 × 400 990 = 400 990² = 160 792 980 100.

As a consequence, 400 990 is the square root of 160 792 980 100.

400 990 is a number with 6 digits.

The multiples of 400 990 are all integers evenly divisible by 400 990, that is all numbers such that the remainder of the division by 400 990 is zero. There are infinitely many multiples of 400 990. The smallest multiples of 400 990 are:

• 0: indeed, 0 is divisible by any natural number, and it is thus a multiple of 400 990 too, since 0 × 400 990 = 0
• 400 990: indeed, 400 990 is a multiple of itself, since 400 990 is evenly divisible by 400 990 (we have 400 990 / 400 990 = 1, so the remainder of this division is indeed zero)
• 801 980: indeed, 801 980 = 400 990 × 2
• 1 202 970: indeed, 1 202 970 = 400 990 × 3
• 1 603 960: indeed, 1 603 960 = 400 990 × 4
• 2 004 950: indeed, 2 004 950 = 400 990 × 5
• etc.

• Preceding numbers: …400 988, 400 989
• Following numbers: 400 991, 400 992…

Nearest numbers from 400 990

• Preceding prime number: 400 963
• Following prime number: 400 997

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• 400 990 est-il un nombre premier ?