Is 1389 a prime number?

1 389 is an odd number, because it is not evenly divisible by 2.

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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 1 389 is about 37.269.

Thus, the square root of 1 389 is not an integer, and therefore 1 389 is not a square number.

The square of a number (here 1 389) is the result of the product of this number (1 389) by itself (i.e., 1 389 × 1 389); the square of 1 389 is sometimes called "raising 1 389 to the power 2", or "1 389 squared".

The square of 1 389 is 1 929 321 because 1 389 × 1 389 = 1 389² = 1 929 321.

As a consequence, 1 389 is the square root of 1 929 321.

1 389 is a number with 4 digits.

The multiples of 1 389 are all integers evenly divisible by 1 389, that is all numbers such that the remainder of the division by 1 389 is zero. There are infinitely many multiples of 1 389. The smallest multiples of 1 389 are:

• 0: indeed, 0 is divisible by any natural number, and it is thus a multiple of 1 389 too, since 0 × 1 389 = 0
• 1 389: indeed, 1 389 is a multiple of itself, since 1 389 is evenly divisible by 1 389 (we have 1 389 / 1 389 = 1, so the remainder of this division is indeed zero)
• 2 778: indeed, 2 778 = 1 389 × 2
• 4 167: indeed, 4 167 = 1 389 × 3
• 5 556: indeed, 5 556 = 1 389 × 4
• 6 945: indeed, 6 945 = 1 389 × 5
• etc.

• Preceding numbers: …1 387, 1 388
• Following numbers: 1 390, 1 391…

Nearest numbers from 1 389

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

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• 1 389 est-il un nombre premier ?