856039950 has 36 divisors (see below), whose sum is σ = 2299895208. Its totient is φ = 228277200.

The previous prime is 856039939. The next prime is 856039993. The reversal of 856039950 is 59930658.

856039950 is a `hidden beast` number, since 8 + 560 + 39 + 9 + 50 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a junction number, because it is equal to n+sod(n) for n = 856039896 and 856039905.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 950706 + ... + 951605.

It is an arithmetic number, because the mean of its divisors is an integer number (63885978).

Almost surely, 2^856039950 is an apocalyptic number.

856039950 is an abundant number, since it is smaller than the sum of its proper divisors (1443855258).

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

856039950 is a wasteful number, since it uses less digits than its factorization.

856039950 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1902329 (or 1902321 counting only the distinct ones).

The product of its (nonzero) digits is 291600, while the sum is 45.

The square root of 856039950 is about 29258.1604001345. The cubic root of 856039950 is about 949.5066505810.

The spelling of 856039950 in words is "eight hundred fifty-six million, thirty-nine thousand, nine hundred fifty".