849777856 has 28 divisors (see below), whose sum is σ = 1687929568. Its totient is φ = 424472832.

The previous prime is 849777833. The next prime is 849777871. The reversal of 849777856 is 658777948.

It is a junction number, because it is equal to n+sod(n) for n = 849777794 and 849777803.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 65545 + ... + 77431.

Almost surely, 2^849777856 is an apocalyptic number.

It is an amenable number.

849777856 is a deficient number, since it is larger than the sum of its proper divisors (838151712).

849777856 is a wasteful number, since it uses less digits than its factorization.

849777856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13016 (or 13006 counting only the distinct ones).

The product of its digits is 23708160, while the sum is 61.

The square root of 849777856 is about 29150.9494871093. The cubic root of 849777856 is about 947.1857084449.

The spelling of 849777856 in words is "eight hundred forty-nine million, seven hundred seventy-seven thousand, eight hundred fifty-six".