859091121 has 24 divisors (see below), whose sum is σ = 1441437504. Its totient is φ = 482859360.

The previous prime is 859091111. The next prime is 859091131. The reversal of 859091121 is 121190958.

It is an interprime number because it is at equal distance from previous prime (859091111) and next prime (859091131).

It is not a de Polignac number, because 859091121 - 2⁵ = 859091089 is a prime.

It is not an unprimeable number, because it can be changed into a prime (859091111) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 107931 + ... + 115616.

It is an arithmetic number, because the mean of its divisors is an integer number (60059896).

Almost surely, 2^859091121 is an apocalyptic number.

It is an amenable number.

859091121 is a deficient number, since it is larger than the sum of its proper divisors (582346383).

859091121 is a wasteful number, since it uses less digits than its factorization.

859091121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 223621 (or 223618 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 36.

The square root of 859091121 is about 29310.2562424828. The cubic root of 859091121 is about 950.6334172765.

The spelling of 859091121 in words is "eight hundred fifty-nine million, ninety-one thousand, one hundred twenty-one".