856946846 has 24 divisors (see below), whose sum is σ = 1560557136. Its totient is φ = 345657600.

The previous prime is 856946837. The next prime is 856946879. The reversal of 856946846 is 648649658.

It is a junction number, because it is equal to n+sod(n) for n = 856946791 and 856946800.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 101855 + ... + 109946.

It is an arithmetic number, because the mean of its divisors is an integer number (65023214).

Almost surely, 2^856946846 is an apocalyptic number.

856946846 is a deficient number, since it is larger than the sum of its proper divisors (703610290).

856946846 is a wasteful number, since it uses less digits than its factorization.

856946846 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 211844 (or 211827 counting only the distinct ones).

The product of its digits is 9953280, while the sum is 56.

The square root of 856946846 is about 29273.6544695055. The cubic root of 856946846 is about 949.8418373814.

The spelling of 856946846 in words is "eight hundred fifty-six million, nine hundred forty-six thousand, eight hundred forty-six".