859120079 has 4 divisors (see below), whose sum is σ = 859186776. Its totient is φ = 859053384.

The previous prime is 859120069. The next prime is 859120117. The reversal of 859120079 is 970021958.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 970021958 = 2 ⋅485010979.

It is a cyclic number.

It is not a de Polignac number, because 859120079 - 2⁸ = 859119823 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (859120069) 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, 7184 + ... + 42069.

It is an arithmetic number, because the mean of its divisors is an integer number (214796694).

Almost surely, 2^859120079 is an apocalyptic number.

859120079 is a deficient number, since it is larger than the sum of its proper divisors (66697).

859120079 is a wasteful number, since it uses less digits than its factorization.

859120079 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66696.

The product of its (nonzero) digits is 45360, while the sum is 41.

The square root of 859120079 is about 29310.7502292248. The cubic root of 859120079 is about 950.6440983838.

The spelling of 859120079 in words is "eight hundred fifty-nine million, one hundred twenty thousand, seventy-nine".