999911112 has 64 divisors (see below), whose sum is σ = 2528210880. Its totient is φ = 329536512.

The previous prime is 999911111. The next prime is 999911147. The reversal of 999911112 is 211119999.

It is not an unprimeable number, because it can be changed into a prime (999911111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 910948 + ... + 912044.

It is an arithmetic number, because the mean of its divisors is an integer number (39503295).

Almost surely, 2^999911112 is an apocalyptic number.

It is an amenable number.

999911112 is an abundant number, since it is smaller than the sum of its proper divisors (1528299768).

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

999911112 is a wasteful number, since it uses less digits than its factorization.

999911112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1502 (or 1498 counting only the distinct ones).

The product of its digits is 13122, while the sum is 42.

The square root of 999911112 is about 31621.3711277674. The cubic root of 999911112 is about 999.9703697887.

The spelling of 999911112 in words is "nine hundred ninety-nine million, nine hundred eleven thousand, one hundred twelve".