Is 1390 a prime number?

1 390 is an even number, because it is evenly divisible by 2: 1 390 / 2 = 695.

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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 1 390 is about 37.283.

Thus, the square root of 1 390 is not an integer, and therefore 1 390 is not a square number.

The square of a number (here 1 390) is the result of the product of this number (1 390) by itself (i.e., 1 390 × 1 390); the square of 1 390 is sometimes called "raising 1 390 to the power 2", or "1 390 squared".

The square of 1 390 is 1 932 100 because 1 390 × 1 390 = 1 390² = 1 932 100.

As a consequence, 1 390 is the square root of 1 932 100.

1 390 is a number with 4 digits.

The multiples of 1 390 are all integers evenly divisible by 1 390, that is all numbers such that the remainder of the division by 1 390 is zero. There are infinitely many multiples of 1 390. The smallest multiples of 1 390 are:

• 0: indeed, 0 is divisible by any natural number, and it is thus a multiple of 1 390 too, since 0 × 1 390 = 0
• 1 390: indeed, 1 390 is a multiple of itself, since 1 390 is evenly divisible by 1 390 (we have 1 390 / 1 390 = 1, so the remainder of this division is indeed zero)
• 2 780: indeed, 2 780 = 1 390 × 2
• 4 170: indeed, 4 170 = 1 390 × 3
• 5 560: indeed, 5 560 = 1 390 × 4
• 6 950: indeed, 6 950 = 1 390 × 5
• etc.

• Preceding numbers: …1 388, 1 389
• Following numbers: 1 391, 1 392…

Nearest numbers from 1 390

• Preceding prime number: 1 381
• Following prime number: 1 399

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• 1 390 est-il un nombre premier ?