39239913 has 8 divisors (see below), whose sum is σ = 52374400. Its totient is φ = 26132688.

The previous prime is 39239899. The next prime is 39239923. The reversal of 39239913 is 31993293.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 39239913 - 2⁸ = 39239657 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (39239923) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3178 + ... + 9411.

It is an arithmetic number, because the mean of its divisors is an integer number (6546800).

Almost surely, 2^39239913 is an apocalyptic number.

It is an amenable number.

39239913 is a deficient number, since it is larger than the sum of its proper divisors (13134487).

39239913 is a wasteful number, since it uses less digits than its factorization.

39239913 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13631.

The product of its digits is 39366, while the sum is 39.

The square root of 39239913 is about 6264.1769611019. The cubic root of 39239913 is about 339.8151041988.

The spelling of 39239913 in words is "thirty-nine million, two hundred thirty-nine thousand, nine hundred thirteen".