859099 has 4 divisors (see below), whose sum is σ = 873720. Its totient is φ = 844480.

The previous prime is 859093. The next prime is 859109. The reversal of 859099 is 990958.

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 859099 - 2³ = 859091 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (859091) 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 3 ways as a sum of consecutive naturals, for example, 7222 + ... + 7339.

It is an arithmetic number, because the mean of its divisors is an integer number (218430).

2⁸⁵⁹⁰⁹⁹ is an apocalyptic number.

859099 is a deficient number, since it is larger than the sum of its proper divisors (14621).

859099 is a wasteful number, since it uses less digits than its factorization.

859099 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14620.

The product of its (nonzero) digits is 29160, while the sum is 40.

The square root of 859099 is about 926.8759356030. The cubic root of 859099 is about 95.0636323456.

The spelling of 859099 in words is "eight hundred fifty-nine thousand, ninety-nine".