Is 7940 a prime number?

7 940 is an even number, because it is evenly divisible by 2: 7 940 / 2 = 3 970.

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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 7 940 is about 89.107.

Thus, the square root of 7 940 is not an integer, and therefore 7 940 is not a square number.

The square of a number (here 7 940) is the result of the product of this number (7 940) by itself (i.e., 7 940 × 7 940); the square of 7 940 is sometimes called "raising 7 940 to the power 2", or "7 940 squared".

The square of 7 940 is 63 043 600 because 7 940 × 7 940 = 7 940² = 63 043 600.

As a consequence, 7 940 is the square root of 63 043 600.

7 940 is a number with 4 digits.

The multiples of 7 940 are all integers evenly divisible by 7 940, that is all numbers such that the remainder of the division by 7 940 is zero. There are infinitely many multiples of 7 940. The smallest multiples of 7 940 are:

• 0: indeed, 0 is divisible by any natural number, and it is thus a multiple of 7 940 too, since 0 × 7 940 = 0
• 7 940: indeed, 7 940 is a multiple of itself, since 7 940 is evenly divisible by 7 940 (we have 7 940 / 7 940 = 1, so the remainder of this division is indeed zero)
• 15 880: indeed, 15 880 = 7 940 × 2
• 23 820: indeed, 23 820 = 7 940 × 3
• 31 760: indeed, 31 760 = 7 940 × 4
• 39 700: indeed, 39 700 = 7 940 × 5
• etc.

• Preceding numbers: …7 938, 7 939
• Following numbers: 7 941, 7 942…

Nearest numbers from 7 940

• Preceding prime number: 7 937
• Following prime number: 7 949

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• 7 940 est-il un nombre premier ?