Is 3920 a prime number?

3 920 is an even number, because it is evenly divisible by 2: 3 920 / 2 = 1 960.

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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 3 920 is about 62.610.

Thus, the square root of 3 920 is not an integer, and therefore 3 920 is not a square number.

The square of a number (here 3 920) is the result of the product of this number (3 920) by itself (i.e., 3 920 × 3 920); the square of 3 920 is sometimes called "raising 3 920 to the power 2", or "3 920 squared".

The square of 3 920 is 15 366 400 because 3 920 × 3 920 = 3 920² = 15 366 400.

As a consequence, 3 920 is the square root of 15 366 400.

3 920 is a number with 4 digits.

The multiples of 3 920 are all integers evenly divisible by 3 920, that is all numbers such that the remainder of the division by 3 920 is zero. There are infinitely many multiples of 3 920. The smallest multiples of 3 920 are:

• 0: indeed, 0 is divisible by any natural number, and it is thus a multiple of 3 920 too, since 0 × 3 920 = 0
• 3 920: indeed, 3 920 is a multiple of itself, since 3 920 is evenly divisible by 3 920 (we have 3 920 / 3 920 = 1, so the remainder of this division is indeed zero)
• 7 840: indeed, 7 840 = 3 920 × 2
• 11 760: indeed, 11 760 = 3 920 × 3
• 15 680: indeed, 15 680 = 3 920 × 4
• 19 600: indeed, 19 600 = 3 920 × 5
• etc.

• Preceding numbers: …3 918, 3 919
• Following numbers: 3 921, 3 922…

Nearest numbers from 3 920

• Preceding prime number: 3 919
• Following prime number: 3 923

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• 3 920 est-il un nombre premier ?