859898865 has 128 divisors (see below), whose sum is σ = 1741824000. Its totient is φ = 353396736.

The previous prime is 859898857. The next prime is 859898867. The reversal of 859898865 is 568898958.

It is not a de Polignac number, because 859898865 - 2³ = 859898857 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 859898796 and 859898805.

It is not an unprimeable number, because it can be changed into a prime (859898867) 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 127 ways as a sum of consecutive naturals, for example, 5149012 + ... + 5149178.

It is an arithmetic number, because the mean of its divisors is an integer number (13608000).

Almost surely, 2^859898865 is an apocalyptic number.

It is an amenable number.

859898865 is an abundant number, since it is smaller than the sum of its proper divisors (881925135).

859898865 is a wasteful number, since it uses less digits than its factorization.

859898865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 319.

The product of its digits is 49766400, while the sum is 66.

The square root of 859898865 is about 29324.0322090943. The cubic root of 859898865 is about 950.9312622462.

The spelling of 859898865 in words is "eight hundred fifty-nine million, eight hundred ninety-eight thousand, eight hundred sixty-five".