239935864841 has 2 divisors, whose sum is σ = 239935864842. Its totient is φ = 239935864840.

The previous prime is 239935864757. The next prime is 239935864843. The reversal of 239935864841 is 148468539932.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 185726521600 + 54209343241 = 430960^2 + 232829^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-239935864841 is a prime.

Together with 239935864843, 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 (239935864843) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 119967932420 + 119967932421.

It is an arithmetic number, because the mean of its divisors is an integer number (119967932421).

Almost surely, 2^239935864841 is an apocalyptic number.

It is an amenable number.

239935864841 is a deficient number, since it is larger than the sum of its proper divisors (1).

239935864841 is an equidigital number, since it uses as much as digits as its factorization.

239935864841 is an evil number, because the sum of its binary digits is even.

The product of its digits is 44789760, while the sum is 62.

The spelling of 239935864841 in words is "two hundred thirty-nine billion, nine hundred thirty-five million, eight hundred sixty-four thousand, eight hundred forty-one".