85188279 has 16 divisors (see below), whose sum is σ = 127908864. Its totient is φ = 49963200.

The previous prime is 85188253. The next prime is 85188281. The reversal of 85188279 is 97288158.

It is not a de Polignac number, because 85188279 - 2⁵ = 85188247 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85188079) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 40614 + ... + 42659.

It is an arithmetic number, because the mean of its divisors is an integer number (7994304).

Almost surely, 2^85188279 is an apocalyptic number.

85188279 is a deficient number, since it is larger than the sum of its proper divisors (42720585).

85188279 is a wasteful number, since it uses less digits than its factorization.

85188279 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83318.

The product of its digits is 322560, while the sum is 48.

The square root of 85188279 is about 9229.7496715783. The cubic root of 85188279 is about 440.0073673009.

The spelling of 85188279 in words is "eighty-five million, one hundred eighty-eight thousand, two hundred seventy-nine".