85639485 has 8 divisors (see below), whose sum is σ = 137023200. Its totient is φ = 45674384.

The previous prime is 85639481. The next prime is 85639487. The reversal of 85639485 is 58493658.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 85639485 - 2² = 85639481 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85639481) 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 7 ways as a sum of consecutive naturals, for example, 2854635 + ... + 2854664.

It is an arithmetic number, because the mean of its divisors is an integer number (17127900).

Almost surely, 2^85639485 is an apocalyptic number.

It is an amenable number.

85639485 is a deficient number, since it is larger than the sum of its proper divisors (51383715).

85639485 is a wasteful number, since it uses less digits than its factorization.

85639485 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5709307.

The product of its digits is 1036800, while the sum is 48.

The square root of 85639485 is about 9254.1604157265. The cubic root of 85639485 is about 440.7828436054.

The spelling of 85639485 in words is "eighty-five million, six hundred thirty-nine thousand, four hundred eighty-five".