239309939 has 8 divisors (see below), whose sum is σ = 261370368. Its totient is φ = 217300360.

The previous prime is 239309911. The next prime is 239309951. The reversal of 239309939 is 939903932.

239309939 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 239309939 - 2²⁰ = 238261363 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 239309893 and 239309902.

It is not an unprimeable number, because it can be changed into a prime (239309909) 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, 2507 + ... + 22020.

It is an arithmetic number, because the mean of its divisors is an integer number (32671296).

Almost surely, 2^239309939 is an apocalyptic number.

239309939 is a deficient number, since it is larger than the sum of its proper divisors (22060429).

239309939 is a wasteful number, since it uses less digits than its factorization.

239309939 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25425.

The product of its (nonzero) digits is 354294, while the sum is 47.

The square root of 239309939 is about 15469.6457296216. The cubic root of 239309939 is about 620.8503238908.

The spelling of 239309939 in words is "two hundred thirty-nine million, three hundred nine thousand, nine hundred thirty-nine".