Is 1979 a prime number? What are the divisors of 1979?

## Is 1979 a prime number?

Yes, 1979 is a prime number.

Indeed, the definition of a prime numbers is to have only two distinct positive divisors, 1 and itself. A number is a divisor of another number when the remainder of Euclid’s division of the second one by the first one is zero. Concerning the number 1979, the only two divisors are 1 and 1979. Therefore 1979 is a prime number.

As a consequence, 1979 is only a multiple of 1 and 1979.

Therefore year 1979 was a prime year.

Since 1979 is a prime number, 1979 is also a deficient number, that is to say 1979 is a natural integer that is strictly larger than the sum of its proper divisors, i.e., the divisors of 1979 without 1979 itself (that is 1, by definition!).

## Parity of 1979

1979 is an odd number, because it is not evenly divisible by 2.

## Is 1979 a perfect square 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 1979 is about 44.486.

Thus, the square root of 1979 is not an integer, and therefore 1979 is not a square number.

Anyway, 1979 is a prime number, and a prime number cannot be a perfect square.

## What is the square number of 1979?

The square of a number (here 1979) is the result of the product of this number (1979) by itself (i.e., 1979 × 1979); the square of 1979 is sometimes called "raising 1979 to the power 2", or "1979 squared".

The square of 1979 is 3 916 441 because 1979 × 1979 = 19792 = 3 916 441.

As a consequence, 1979 is the square root of 3 916 441.

## Number of digits of 1979

1979 is a number with 4 digits.

## What are the multiples of 1979?

The multiples of 1979 are all integers evenly divisible by 1979, that is all numbers such that the remainder of the division by 1979 is zero. There are infinitely many multiples of 1979. The smallest multiples of 1979 are:

• 0: indeed, 0 is divisible by any natural number, and it is thus a multiple of 1979 too, since 0 × 1979 = 0
• 1979: indeed, 1979 is a multiple of itself, since 1979 is evenly divisible by 1979 (we have 1979 / 1979 = 1, so the remainder of this division is indeed zero)
• 3 958: indeed, 3 958 = 1979 × 2
• 5 937: indeed, 5 937 = 1979 × 3
• 7 916: indeed, 7 916 = 1979 × 4
• 9 895: indeed, 9 895 = 1979 × 5
• etc.

## Nearest numbers from 1979

Find out whether some integer is a prime number