239479913 has 4 divisors (see below), whose sum is σ = 239584128. Its totient is φ = 239375700.

The previous prime is 239479897. The next prime is 239479927. The reversal of 239479913 is 319974932.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 239479913 - 2⁴ = 239479897 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (239479613) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 48581 + ... + 53282.

It is an arithmetic number, because the mean of its divisors is an integer number (59896032).

Almost surely, 2^239479913 is an apocalyptic number.

It is an amenable number.

239479913 is a deficient number, since it is larger than the sum of its proper divisors (104215).

239479913 is a wasteful number, since it uses less digits than its factorization.

239479913 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104214.

The product of its digits is 367416, while the sum is 47.

The square root of 239479913 is about 15475.1385454218. The cubic root of 239479913 is about 620.9972789773.

The spelling of 239479913 in words is "two hundred thirty-nine million, four hundred seventy-nine thousand, nine hundred thirteen".