85139826 has 32 divisors (see below), whose sum is σ = 176368128. Its totient is φ = 27371520.

The previous prime is 85139809. The next prime is 85139837. The reversal of 85139826 is 62893158.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 73266 + ... + 74418.

It is an arithmetic number, because the mean of its divisors is an integer number (5511504).

Almost surely, 2^85139826 is an apocalyptic number.

85139826 is an abundant number, since it is smaller than the sum of its proper divisors (91228302).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

85139826 is a wasteful number, since it uses less digits than its factorization.

85139826 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1586.

The product of its digits is 103680, while the sum is 42.

The square root of 85139826 is about 9227.1244708197. The cubic root of 85139826 is about 439.9239296866.

The spelling of 85139826 in words is "eighty-five million, one hundred thirty-nine thousand, eight hundred twenty-six".