85989798959 has 4 divisors (see below), whose sum is σ = 87200922960. Its totient is φ = 84778674960.

The previous prime is 85989798919. The next prime is 85989799003. The reversal of 85989798959 is 95989798958.

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 85989798959 - 2⁸ = 85989798703 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 (85989798919) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 605561894 + ... + 605562035.

It is an arithmetic number, because the mean of its divisors is an integer number (21800230740).

Almost surely, 2^85989798959 is an apocalyptic number.

85989798959 is a deficient number, since it is larger than the sum of its proper divisors (1211124001).

85989798959 is a wasteful number, since it uses less digits than its factorization.

85989798959 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1211124000.

The product of its digits is 5290790400, while the sum is 86.

Subtracting 85989798959 from its reverse (95989798958), we obtain a palindrome (9999999999).

The spelling of 85989798959 in words is "eighty-five billion, nine hundred eighty-nine million, seven hundred ninety-eight thousand, nine hundred fifty-nine".