239906317 has 16 divisors (see below), whose sum is σ = 279135360. Its totient is φ = 201950208.

The previous prime is 239906311. The next prime is 239906339. The reversal of 239906317 is 713609932.

239906317 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 239906317 - 2³ = 239906309 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 239906317.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (239906311) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 91734 + ... + 94312.

It is an arithmetic number, because the mean of its divisors is an integer number (17445960).

Almost surely, 2^239906317 is an apocalyptic number.

It is an amenable number.

239906317 is a deficient number, since it is larger than the sum of its proper divisors (39229043).

239906317 is a wasteful number, since it uses less digits than its factorization.

239906317 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2820.

The product of its (nonzero) digits is 61236, while the sum is 40.

The square root of 239906317 is about 15488.9094838856. The cubic root of 239906317 is about 621.3656309833.

The spelling of 239906317 in words is "two hundred thirty-nine million, nine hundred six thousand, three hundred seventeen".