856384854 has 36 divisors (see below), whose sum is σ = 1856676276. Its totient is φ = 263216304.

The previous prime is 856384831. The next prime is 856384871. The reversal of 856384854 is 458483658.

It is a happy number.

856384854 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 856384797 and 856384806.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 931407 + ... + 932325.

It is an arithmetic number, because the mean of its divisors is an integer number (51574341).

Almost surely, 2^856384854 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 856384854, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (928338138).

856384854 is an abundant number, since it is smaller than the sum of its proper divisors (1000291422).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

856384854 is an equidigital number, since it uses as much as digits as its factorization.

856384854 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1869 (or 937 counting only the distinct ones).

The product of its digits is 3686400, while the sum is 51.

The square root of 856384854 is about 29264.0539570306. The cubic root of 856384854 is about 949.6341542368.

The spelling of 856384854 in words is "eight hundred fifty-six million, three hundred eighty-four thousand, eight hundred fifty-four".