85279 has 4 divisors (see below), whose sum is σ = 86184. Its totient is φ = 84376.

The previous prime is 85259. The next prime is 85297. The reversal of 85279 is 97258.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 85279 - 2⁵ = 85247 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a d-powerful number, because it can be written as 8³ + 5⁷ + 2⁵ + 7² + 9⁴ .

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 85279.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85229) 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, 292 + ... + 505.

It is an arithmetic number, because the mean of its divisors is an integer number (21546).

2⁸⁵²⁷⁹ is an apocalyptic number.

85279 is a deficient number, since it is larger than the sum of its proper divisors (905).

85279 is a wasteful number, since it uses less digits than its factorization.

85279 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 904.

The product of its digits is 5040, while the sum is 31.

The square root of 85279 is about 292.0256838020. The cubic root of 85279 is about 44.0163506725.

The spelling of 85279 in words is "eighty-five thousand, two hundred seventy-nine".