85279591 has 8 divisors (see below), whose sum is σ = 86828544. Its totient is φ = 83740440.

The previous prime is 85279589. The next prime is 85279613. The reversal of 85279591 is 19597258.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 85279591 - 2¹ = 85279589 is a prime.

It is a super-2 number, since 2×85279591² = 14545217282254562, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85279501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16390 + ... + 20956.

It is an arithmetic number, because the mean of its divisors is an integer number (10853568).

Almost surely, 2^85279591 is an apocalyptic number.

85279591 is a deficient number, since it is larger than the sum of its proper divisors (1548953).

85279591 is a wasteful number, since it uses less digits than its factorization.

85279591 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4901.

The product of its digits is 226800, while the sum is 46.

The square root of 85279591 is about 9234.6949597699. The cubic root of 85279591 is about 440.1645235293.

The spelling of 85279591 in words is "eighty-five million, two hundred seventy-nine thousand, five hundred ninety-one".