85439885 has 16 divisors (see below), whose sum is σ = 104011776. Its totient is φ = 67370688.

The previous prime is 85439863. The next prime is 85439899. The reversal of 85439885 is 58893458.

It is a cyclic number.

It is not a de Polignac number, because 85439885 - 2²² = 81245581 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 124754 + ... + 125436.

It is an arithmetic number, because the mean of its divisors is an integer number (6500736).

Almost surely, 2^85439885 is an apocalyptic number.

It is an amenable number.

85439885 is a deficient number, since it is larger than the sum of its proper divisors (18571891).

85439885 is a wasteful number, since it uses less digits than its factorization.

85439885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1012.

The product of its digits is 1382400, while the sum is 50.

The square root of 85439885 is about 9243.3697859601. The cubic root of 85439885 is about 440.4401329344.

The spelling of 85439885 in words is "eighty-five million, four hundred thirty-nine thousand, eight hundred eighty-five".