239679677 has 2 divisors, whose sum is σ = 239679678. Its totient is φ = 239679676.

The previous prime is 239679571. The next prime is 239679689. The reversal of 239679677 is 776976932.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 130393561 + 109286116 = 11419^2 + 10454^2 .

It is a cyclic number.

It is not a de Polignac number, because 239679677 - 2²⁶ = 172570813 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (239679697) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 119839838 + 119839839.

It is an arithmetic number, because the mean of its divisors is an integer number (119839839).

Almost surely, 2^239679677 is an apocalyptic number.

It is an amenable number.

239679677 is a deficient number, since it is larger than the sum of its proper divisors (1).

239679677 is an equidigital number, since it uses as much as digits as its factorization.

239679677 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6001128, while the sum is 56.

The square root of 239679677 is about 15481.5915525504. The cubic root of 239679677 is about 621.1699008639.

The spelling of 239679677 in words is "two hundred thirty-nine million, six hundred seventy-nine thousand, six hundred seventy-seven".