869199912 has 96 divisors (see below), whose sum is σ = 2695492800. Its totient is φ = 247871232.

The previous prime is 869199889. The next prime is 869199913. The reversal of 869199912 is 219991968.

869199912 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (869199913) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 330828 + ... + 333444.

It is an arithmetic number, because the mean of its divisors is an integer number (28078050).

Almost surely, 2^869199912 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 869199912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1347746400).

869199912 is an abundant number, since it is smaller than the sum of its proper divisors (1826292888).

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

869199912 is a wasteful number, since it uses less digits than its factorization.

869199912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3295 (or 3288 counting only the distinct ones).

The product of its digits is 629856, while the sum is 54.

The square root of 869199912 is about 29482.1965260392. The cubic root of 869199912 is about 954.3475389497.

The spelling of 869199912 in words is "eight hundred sixty-nine million, one hundred ninety-nine thousand, nine hundred twelve".