849561772 has 24 divisors (see below), whose sum is σ = 1507161600. Its totient is φ = 418961616.

The previous prime is 849561767. The next prime is 849561781. The reversal of 849561772 is 277165948.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 236929 + ... + 240487.

It is an arithmetic number, because the mean of its divisors is an integer number (62798400).

Almost surely, 2^849561772 is an apocalyptic number.

It is an amenable number.

849561772 is a deficient number, since it is larger than the sum of its proper divisors (657599828).

849561772 is a wasteful number, since it uses less digits than its factorization.

849561772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4365 (or 4363 counting only the distinct ones).

The product of its digits is 846720, while the sum is 49.

The square root of 849561772 is about 29147.2429570963. The cubic root of 849561772 is about 947.1054172544.

The spelling of 849561772 in words is "eight hundred forty-nine million, five hundred sixty-one thousand, seven hundred seventy-two".