859813099 has 4 divisors (see below), whose sum is σ = 905066440. Its totient is φ = 814559760.

The previous prime is 859813093. The next prime is 859813103. The reversal of 859813099 is 990318958.

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 859813099 - 2²⁷ = 725595371 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (859813093) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22626642 + ... + 22626679.

It is an arithmetic number, because the mean of its divisors is an integer number (226266610).

Almost surely, 2^859813099 is an apocalyptic number.

859813099 is a deficient number, since it is larger than the sum of its proper divisors (45253341).

859813099 is a wasteful number, since it uses less digits than its factorization.

859813099 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45253340.

The product of its (nonzero) digits is 699840, while the sum is 52.

The square root of 859813099 is about 29322.5697884752. The cubic root of 859813099 is about 950.8996460157.

The spelling of 859813099 in words is "eight hundred fifty-nine million, eight hundred thirteen thousand, ninety-nine".