85389 has 4 divisors (see below), whose sum is σ = 113856. Its totient is φ = 56924.

The previous prime is 85381. The next prime is 85411. The reversal of 85389 is 98358.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 85389 - 2³ = 85381 is a prime.

It is a D-number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85381) 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, 14229 + ... + 14234.

It is an arithmetic number, because the mean of its divisors is an integer number (28464).

2⁸⁵³⁸⁹ is an apocalyptic number.

It is an amenable number.

85389 is a deficient number, since it is larger than the sum of its proper divisors (28467).

85389 is a wasteful number, since it uses less digits than its factorization.

85389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28466.

The product of its digits is 8640, while the sum is 33.

The square root of 85389 is about 292.2139627054. The cubic root of 85389 is about 44.0352678670.

It can be divided in two parts, 85 and 389, that added together give a palindrome (474).

The spelling of 85389 in words is "eighty-five thousand, three hundred eighty-nine".