856830079 has 4 divisors (see below), whose sum is σ = 979234384. Its totient is φ = 734425776.

The previous prime is 856830047. The next prime is 856830089. The reversal of 856830079 is 970038658.

856830079 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 970038658 = 2 ⋅485019329.

It is not a de Polignac number, because 856830079 - 2⁵ = 856830047 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 (856830019) 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, 61202142 + ... + 61202155.

It is an arithmetic number, because the mean of its divisors is an integer number (244808596).

Almost surely, 2^856830079 is an apocalyptic number.

856830079 is a deficient number, since it is larger than the sum of its proper divisors (122404305).

856830079 is a wasteful number, since it uses less digits than its factorization.

856830079 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122404304.

The product of its (nonzero) digits is 362880, while the sum is 46.

The square root of 856830079 is about 29271.6599973421. The cubic root of 856830079 is about 949.7986938187.

The spelling of 856830079 in words is "eight hundred fifty-six million, eight hundred thirty thousand, seventy-nine".