239903990 has 8 divisors (see below), whose sum is σ = 431827200. Its totient is φ = 95961592.

The previous prime is 239903981. The next prime is 239904059. The reversal of 239903990 is 99309932.

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

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11995190 + ... + 11995209.

It is an arithmetic number, because the mean of its divisors is an integer number (53978400).

Almost surely, 2^239903990 is an apocalyptic number.

239903990 is a deficient number, since it is larger than the sum of its proper divisors (191923210).

239903990 is a wasteful number, since it uses less digits than its factorization.

239903990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23990406.

The product of its (nonzero) digits is 118098, while the sum is 44.

The square root of 239903990 is about 15488.8343654389. The cubic root of 239903990 is about 621.3636219734.

The spelling of 239903990 in words is "two hundred thirty-nine million, nine hundred three thousand, nine hundred ninety".