85439636 has 12 divisors (see below), whose sum is σ = 149587200. Its totient is φ = 42700440.

The previous prime is 85439621. The next prime is 85439659. The reversal of 85439636 is 63693458.

It is a hoax number, since the sum of its digits (44) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 10415 + ... + 16713.

It is an arithmetic number, because the mean of its divisors is an integer number (12465600).

Almost surely, 2^85439636 is an apocalyptic number.

It is an amenable number.

85439636 is a deficient number, since it is larger than the sum of its proper divisors (64147564).

85439636 is a wasteful number, since it uses less digits than its factorization.

85439636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9694 (or 9692 counting only the distinct ones).

The product of its digits is 466560, while the sum is 44.

The square root of 85439636 is about 9243.3563168364. The cubic root of 85439636 is about 440.4397050714.

The spelling of 85439636 in words is "eighty-five million, four hundred thirty-nine thousand, six hundred thirty-six".