85856838 has 16 divisors (see below), whose sum is σ = 179179776. Its totient is φ = 27374600.

The previous prime is 85856803. The next prime is 85856843. The reversal of 85856838 is 83865858.

It is a Curzon number.

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 7 ways as a sum of consecutive naturals, for example, 310938 + ... + 311213.

It is an arithmetic number, because the mean of its divisors is an integer number (11198736).

Almost surely, 2^85856838 is an apocalyptic number.

85856838 is an abundant number, since it is smaller than the sum of its proper divisors (93322938).

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

85856838 is a wasteful number, since it uses less digits than its factorization.

85856838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 622179.

The product of its digits is 1843200, while the sum is 51.

The square root of 85856838 is about 9265.8965027676. The cubic root of 85856838 is about 441.1554308377.

The spelling of 85856838 in words is "eighty-five million, eight hundred fifty-six thousand, eight hundred thirty-eight".