849561694 has 16 divisors (see below), whose sum is σ = 1282830336. Its totient is φ = 421961400.

The previous prime is 849561677. The next prime is 849561719. The reversal of 849561694 is 496165948.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 196779 + ... + 201049.

It is an arithmetic number, because the mean of its divisors is an integer number (80176896).

Almost surely, 2^849561694 is an apocalyptic number.

849561694 is a deficient number, since it is larger than the sum of its proper divisors (433268642).

849561694 is a wasteful number, since it uses less digits than its factorization.

849561694 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4911.

The product of its digits is 1866240, while the sum is 52.

The square root of 849561694 is about 29147.2416190623. The cubic root of 849561694 is about 947.1053882691.

The spelling of 849561694 in words is "eight hundred forty-nine million, five hundred sixty-one thousand, six hundred ninety-four".