85993539839 has 4 divisors (see below), whose sum is σ = 90519515640. Its totient is φ = 81467564040.

The previous prime is 85993539781. The next prime is 85993539847. The reversal of 85993539839 is 93893539958.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 85993539839 - 2²⁴ = 85976762623 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85993539869) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2262987872 + ... + 2262987909.

It is an arithmetic number, because the mean of its divisors is an integer number (22629878910).

Almost surely, 2^85993539839 is an apocalyptic number.

85993539839 is a deficient number, since it is larger than the sum of its proper divisors (4525975801).

85993539839 is a wasteful number, since it uses less digits than its factorization.

85993539839 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4525975800.

The product of its digits is 283435200, while the sum is 71.

The spelling of 85993539839 in words is "eighty-five billion, nine hundred ninety-three million, five hundred thirty-nine thousand, eight hundred thirty-nine".