85808079 has 20 divisors (see below), whose sum is σ = 146495184. Its totient is φ = 49032864.

The previous prime is 85808053. The next prime is 85808081. The reversal of 85808079 is 97080858.

It is not a de Polignac number, because 85808079 - 2¹² = 85803983 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85803079) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 75102 + ... + 76235.

Almost surely, 2^85808079 is an apocalyptic number.

85808079 is a deficient number, since it is larger than the sum of its proper divisors (60687105).

85808079 is a wasteful number, since it uses less digits than its factorization.

85808079 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151356 (or 151347 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 45.

The square root of 85808079 is about 9263.2650291352. The cubic root of 85808079 is about 441.0719027561.

The spelling of 85808079 in words is "eighty-five million, eight hundred eight thousand, seventy-nine".