20085859 has 8 divisors (see below), whose sum is σ = 21056112. Its totient is φ = 19138560.

The previous prime is 20085853. The next prime is 20085881. The reversal of 20085859 is 95858002.

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 20085859 - 2³ = 20085851 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20085851) 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, 3934 + ... + 7459.

It is an arithmetic number, because the mean of its divisors is an integer number (2632014).

Almost surely, 2^20085859 is an apocalyptic number.

20085859 is a deficient number, since it is larger than the sum of its proper divisors (970253).

20085859 is a wasteful number, since it uses less digits than its factorization.

20085859 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11477.

The product of its (nonzero) digits is 28800, while the sum is 37.

The square root of 20085859 is about 4481.7250027194. The cubic root of 20085859 is about 271.8296357834.

The spelling of 20085859 in words is "twenty million, eighty-five thousand, eight hundred fifty-nine".