239825939 has 2 divisors, whose sum is σ = 239825940. Its totient is φ = 239825938.

The previous prime is 239825917. The next prime is 239825941. The reversal of 239825939 is 939528932.

239825939 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-239825939 is a prime.

Together with 239825941, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (239825639) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 119912969 + 119912970.

It is an arithmetic number, because the mean of its divisors is an integer number (119912970).

Almost surely, 2^239825939 is an apocalyptic number.

239825939 is a deficient number, since it is larger than the sum of its proper divisors (1).

239825939 is an equidigital number, since it uses as much as digits as its factorization.

239825939 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1049760, while the sum is 50.

The square root of 239825939 is about 15486.3145712594. The cubic root of 239825939 is about 621.2962293017.

The spelling of 239825939 in words is "two hundred thirty-nine million, eight hundred twenty-five thousand, nine hundred thirty-nine".