849943188 has 72 divisors (see below), whose sum is σ = 2268695520. Its totient is φ = 267554880.

The previous prime is 849943187. The next prime is 849943267. The reversal of 849943188 is 881349948.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (849943183) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 235558 + ... + 239138.

It is an arithmetic number, because the mean of its divisors is an integer number (31509660).

Almost surely, 2^849943188 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 849943188, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1134347760).

849943188 is an abundant number, since it is smaller than the sum of its proper divisors (1418752332).

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

849943188 is a wasteful number, since it uses less digits than its factorization.

849943188 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3957 (or 3952 counting only the distinct ones).

The product of its digits is 1990656, while the sum is 54.

The square root of 849943188 is about 29153.7851401838. The cubic root of 849943188 is about 947.2471323223.

The spelling of 849943188 in words is "eight hundred forty-nine million, nine hundred forty-three thousand, one hundred eighty-eight".