85139170 has 32 divisors (see below), whose sum is σ = 156344832. Its totient is φ = 33374592.

The previous prime is 85139167. The next prime is 85139177. The reversal of 85139170 is 7193158.

It is a happy number.

It is a Smith number, since the sum of its digits (34) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (85139177) 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 15 ways as a sum of consecutive naturals, for example, 162529 + ... + 163051.

It is an arithmetic number, because the mean of its divisors is an integer number (4885776).

Almost surely, 2^85139170 is an apocalyptic number.

85139170 is a deficient number, since it is larger than the sum of its proper divisors (71205662).

85139170 is a wasteful number, since it uses less digits than its factorization.

85139170 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 826.

The product of its (nonzero) digits is 7560, while the sum is 34.

The square root of 85139170 is about 9227.0889233821. The cubic root of 85139170 is about 439.9227998165.

The spelling of 85139170 in words is "eighty-five million, one hundred thirty-nine thousand, one hundred seventy".