479815439 has 4 divisors (see below), whose sum is σ = 482759256. Its totient is φ = 476871624.

The previous prime is 479815409. The next prime is 479815459. The reversal of 479815439 is 934518974.

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

It is a cyclic number.

It is not a de Polignac number, because 479815439 - 2⁸ = 479815183 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (479815409) 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, 1471664 + ... + 1471989.

It is an arithmetic number, because the mean of its divisors is an integer number (120689814).

Almost surely, 2^479815439 is an apocalyptic number.

479815439 is a deficient number, since it is larger than the sum of its proper divisors (2943817).

479815439 is a wasteful number, since it uses less digits than its factorization.

479815439 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2943816.

The product of its digits is 1088640, while the sum is 50.

The square root of 479815439 is about 21904.6898859582. The cubic root of 479815439 is about 782.8731637183.

The spelling of 479815439 in words is "four hundred seventy-nine million, eight hundred fifteen thousand, four hundred thirty-nine".