856068839 has 8 divisors (see below), whose sum is σ = 866250000. Its totient is φ = 845900352.

The previous prime is 856068833. The next prime is 856068841. The reversal of 856068839 is 938860658.

It is a happy number.

856068839 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 856068839 - 2⁴ = 856068823 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 (856068833) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 242912 + ... + 246410.

It is an arithmetic number, because the mean of its divisors is an integer number (108281250).

Almost surely, 2^856068839 is an apocalyptic number.

856068839 is a gapful number since it is divisible by the number (89) formed by its first and last digit.

856068839 is a deficient number, since it is larger than the sum of its proper divisors (10181161).

856068839 is a wasteful number, since it uses less digits than its factorization.

856068839 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6337.

The product of its (nonzero) digits is 2488320, while the sum is 53.

The square root of 856068839 is about 29258.6540872953. The cubic root of 856068839 is about 949.5173315425.

The spelling of 856068839 in words is "eight hundred fifty-six million, sixty-eight thousand, eight hundred thirty-nine".