23857338839 has 2 divisors, whose sum is σ = 23857338840. Its totient is φ = 23857338838.

The previous prime is 23857338767. The next prime is 23857338893. The reversal of 23857338839 is 93883375832.

Together with next prime (23857338893) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 23857338839 - 2²⁸ = 23588903383 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23857332839) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11928669419 + 11928669420.

It is an arithmetic number, because the mean of its divisors is an integer number (11928669420).

Almost surely, 2^23857338839 is an apocalyptic number.

23857338839 is a deficient number, since it is larger than the sum of its proper divisors (1).

23857338839 is an equidigital number, since it uses as much as digits as its factorization.

23857338839 is an evil number, because the sum of its binary digits is even.

The product of its digits is 26127360, while the sum is 59.

The spelling of 23857338839 in words is "twenty-three billion, eight hundred fifty-seven million, three hundred thirty-eight thousand, eight hundred thirty-nine".