85158279 has 12 divisors (see below), whose sum is σ = 123166576. Its totient is φ = 56698272.

The previous prime is 85158263. The next prime is 85158301. The reversal of 85158279 is 97285158.

It is a happy number.

It is not a de Polignac number, because 85158279 - 2⁴ = 85158263 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85158079) 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 11 ways as a sum of consecutive naturals, for example, 1659 + ... + 13155.

Almost surely, 2^85158279 is an apocalyptic number.

85158279 is a deficient number, since it is larger than the sum of its proper divisors (38008297).

85158279 is a wasteful number, since it uses less digits than its factorization.

85158279 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12326 (or 12323 counting only the distinct ones).

The product of its digits is 201600, while the sum is 45.

The square root of 85158279 is about 9228.1243489671. The cubic root of 85158279 is about 439.9557100737.

The spelling of 85158279 in words is "eighty-five million, one hundred fifty-eight thousand, two hundred seventy-nine".