85639476 has 48 divisors (see below), whose sum is σ = 217952000. Its totient is φ = 26013312.

The previous prime is 85639459. The next prime is 85639481. The reversal of 85639476 is 67493658.

It is a congruent number.

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, 8850 + ... + 15798.

Almost surely, 2^85639476 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 85639476, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (108976000).

85639476 is an abundant number, since it is smaller than the sum of its proper divisors (132312524).

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

85639476 is a wasteful number, since it uses less digits than its factorization.

85639476 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7048 (or 7046 counting only the distinct ones).

The product of its digits is 1088640, while the sum is 48.

The square root of 85639476 is about 9254.1599294588. The cubic root of 85639476 is about 440.7828281645.

The spelling of 85639476 in words is "eighty-five million, six hundred thirty-nine thousand, four hundred seventy-six".