239572013 has 4 divisors (see below), whose sum is σ = 239827548. Its totient is φ = 239316480.

The previous prime is 239572009. The next prime is 239572033. The reversal of 239572013 is 310275932.

239572013 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in 2 ways, for example, as 163916809 + 75655204 = 12803^2 + 8698^2 .

It is a cyclic number.

It is not a de Polignac number, because 239572013 - 2² = 239572009 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 (239572033) 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, 126356 + ... + 128237.

It is an arithmetic number, because the mean of its divisors is an integer number (59956887).

Almost surely, 2^239572013 is an apocalyptic number.

It is an amenable number.

239572013 is a deficient number, since it is larger than the sum of its proper divisors (255535).

239572013 is an equidigital number, since it uses as much as digits as its factorization.

239572013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 255534.

The product of its (nonzero) digits is 11340, while the sum is 32.

The square root of 239572013 is about 15478.1140000970. The cubic root of 239572013 is about 621.0768771898.

The spelling of 239572013 in words is "two hundred thirty-nine million, five hundred seventy-two thousand, thirteen".