859135979 has 4 divisors (see below), whose sum is σ = 925223376. Its totient is φ = 793048584.

The previous prime is 859135961. The next prime is 859136011. The reversal of 859135979 is 979531958.

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 859135979 - 2²⁴ = 842358763 is a prime.

It is a super-2 number, since 2×859135979² = 1476229260824576882, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (859135909) 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, 33043679 + ... + 33043704.

It is an arithmetic number, because the mean of its divisors is an integer number (231305844).

Almost surely, 2^859135979 is an apocalyptic number.

859135979 is a deficient number, since it is larger than the sum of its proper divisors (66087397).

859135979 is a wasteful number, since it uses less digits than its factorization.

859135979 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66087396.

The product of its digits is 3061800, while the sum is 56.

The square root of 859135979 is about 29311.0214595125. The cubic root of 859135979 is about 950.6499629686.

The spelling of 859135979 in words is "eight hundred fifty-nine million, one hundred thirty-five thousand, nine hundred seventy-nine".