479138579 has 4 divisors (see below), whose sum is σ = 479223984. Its totient is φ = 479053176.

The previous prime is 479138521. The next prime is 479138623. The reversal of 479138579 is 975831974.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-479138579 is a prime.

It is a super-2 number, since 2×479138579² = 459147555772278482, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 479138579.

It is not an unprimeable number, because it can be changed into a prime (479138879) 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, 33647 + ... + 45720.

It is an arithmetic number, because the mean of its divisors is an integer number (119805996).

Almost surely, 2^479138579 is an apocalyptic number.

479138579 is a deficient number, since it is larger than the sum of its proper divisors (85405).

479138579 is an equidigital number, since it uses as much as digits as its factorization.

479138579 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85404.

The product of its digits is 1905120, while the sum is 53.

The square root of 479138579 is about 21889.2343173534. The cubic root of 479138579 is about 782.5048659307.

The spelling of 479138579 in words is "four hundred seventy-nine million, one hundred thirty-eight thousand, five hundred seventy-nine".