239979377 has 4 divisors (see below), whose sum is σ = 261795696. Its totient is φ = 218163060.

The previous prime is 239979359. The next prime is 239979403. The reversal of 239979377 is 773979932.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 239979377 - 2¹⁶ = 239913841 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (239979877) 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, 10908143 + ... + 10908164.

It is an arithmetic number, because the mean of its divisors is an integer number (65448924).

Almost surely, 2^239979377 is an apocalyptic number.

It is an amenable number.

239979377 is a deficient number, since it is larger than the sum of its proper divisors (21816319).

239979377 is a wasteful number, since it uses less digits than its factorization.

239979377 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21816318.

The product of its digits is 4500846, while the sum is 56.

The square root of 239979377 is about 15491.2677660674. The cubic root of 239979377 is about 621.4287005542.

The spelling of 239979377 in words is "two hundred thirty-nine million, nine hundred seventy-nine thousand, three hundred seventy-seven".