85959 has 6 divisors (see below), whose sum is σ = 124176. Its totient is φ = 57300.

The previous prime is 85933. The next prime is 85991. The reversal of 85959 is 95958.

It is not a de Polignac number, because 85959 - 2⁷ = 85831 is a prime.

It is an Ulam number.

It is a plaindrome in base 14.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85909) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4767 + ... + 4784.

It is an arithmetic number, because the mean of its divisors is an integer number (20696).

2⁸⁵⁹⁵⁹ is an apocalyptic number.

85959 is a deficient number, since it is larger than the sum of its proper divisors (38217).

85959 is a wasteful number, since it uses less digits than its factorization.

85959 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9557 (or 9554 counting only the distinct ones).

The product of its digits is 16200, while the sum is 36.

The square root of 85959 is about 293.1876532189. The cubic root of 85959 is about 44.1330340054.

Subtracting 85959 from its reverse (95958), we obtain a palindrome (9999).

The spelling of 85959 in words is "eighty-five thousand, nine hundred fifty-nine".