849923816 has 64 divisors (see below), whose sum is σ = 1884336000. Its totient is φ = 359178624.

The previous prime is 849923813. The next prime is 849923831. The reversal of 849923816 is 618329948.

It is a happy number.

849923816 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (50) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (849923813) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 198191 + ... + 202433.

It is an arithmetic number, because the mean of its divisors is an integer number (29442750).

Almost surely, 2^849923816 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 849923816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (942168000).

849923816 is an abundant number, since it is smaller than the sum of its proper divisors (1034412184).

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

849923816 is a wasteful number, since it uses less digits than its factorization.

849923816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4343 (or 4325 counting only the distinct ones).

The product of its digits is 746496, while the sum is 50.

The square root of 849923816 is about 29153.4529001283. The cubic root of 849923816 is about 947.2399356802.

The spelling of 849923816 in words is "eight hundred forty-nine million, nine hundred twenty-three thousand, eight hundred sixteen".