518979 has 4 divisors (see below), whose sum is σ = 691976. Its totient is φ = 345984.

The previous prime is 518953. The next prime is 518981. The reversal of 518979 is 979815.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 518979 - 2⁹ = 518467 is a prime.

It is a D-number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (518989) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 86494 + ... + 86499.

It is an arithmetic number, because the mean of its divisors is an integer number (172994).

2⁵¹⁸⁹⁷⁹ is an apocalyptic number.

518979 is a deficient number, since it is larger than the sum of its proper divisors (172997).

518979 is a wasteful number, since it uses less digits than its factorization.

518979 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 172996.

The product of its digits is 22680, while the sum is 39.

The square root of 518979 is about 720.4019711245. The cubic root of 518979 is about 80.3618504191.

The spelling of 518979 in words is "five hundred eighteen thousand, nine hundred seventy-nine".