479105639 has 4 divisors (see below), whose sum is σ = 489299424. Its totient is φ = 468911856.

The previous prime is 479105629. The next prime is 479105687. The reversal of 479105639 is 936501974.

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

It is not a de Polignac number, because 479105639 - 2²⁸ = 210670183 is a prime.

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 479105639.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (479105609) 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, 5096822 + ... + 5096915.

It is an arithmetic number, because the mean of its divisors is an integer number (122324856).

Almost surely, 2^479105639 is an apocalyptic number.

479105639 is a deficient number, since it is larger than the sum of its proper divisors (10193785).

479105639 is a wasteful number, since it uses less digits than its factorization.

479105639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10193784.

The product of its (nonzero) digits is 204120, while the sum is 44.

The square root of 479105639 is about 21888.4818797467. The cubic root of 479105639 is about 782.4869335398.

The spelling of 479105639 in words is "four hundred seventy-nine million, one hundred five thousand, six hundred thirty-nine".