856697339 has 4 divisors (see below), whose sum is σ = 856986000. Its totient is φ = 856408680.

The previous prime is 856697333. The next prime is 856697351. The reversal of 856697339 is 933796658.

856697339 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.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-856697339 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (856697333) 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, 139832 + ... + 145829.

It is an arithmetic number, because the mean of its divisors is an integer number (214246500).

Almost surely, 2^856697339 is an apocalyptic number.

856697339 is a deficient number, since it is larger than the sum of its proper divisors (288661).

856697339 is a wasteful number, since it uses less digits than its factorization.

856697339 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 288660.

The product of its digits is 7348320, while the sum is 56.

The square root of 856697339 is about 29269.3925287150. The cubic root of 856697339 is about 949.7496437240.

The spelling of 856697339 in words is "eight hundred fifty-six million, six hundred ninety-seven thousand, three hundred thirty-nine".