85606939 has 4 divisors (see below), whose sum is σ = 93389400. Its totient is φ = 77824480.

The previous prime is 85606909. The next prime is 85606949. The reversal of 85606939 is 93960658.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 85606939 - 2²³ = 77218331 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (85606909) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 3891214 + ... + 3891235.

It is an arithmetic number, because the mean of its divisors is an integer number (23347350).

Almost surely, 2^85606939 is an apocalyptic number.

85606939 is a deficient number, since it is larger than the sum of its proper divisors (7782461).

85606939 is a wasteful number, since it uses less digits than its factorization.

85606939 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7782460.

The product of its (nonzero) digits is 349920, while the sum is 46.

The square root of 85606939 is about 9252.4017962905. The cubic root of 85606939 is about 440.7269988974.

The spelling of 85606939 in words is "eighty-five million, six hundred six thousand, nine hundred thirty-nine".