9991112 has 16 divisors (see below), whose sum is σ = 19719600. Its totient is φ = 4732560.

The previous prime is 9991067. The next prime is 9991123. The reversal of 9991112 is 2111999.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32714 + ... + 33017.

It is an arithmetic number, because the mean of its divisors is an integer number (1232475).

Almost surely, 2^9991112 is an apocalyptic number.

It is an amenable number.

9991112 is a deficient number, since it is larger than the sum of its proper divisors (9728488).

9991112 is a wasteful number, since it uses less digits than its factorization.

9991112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65756 (or 65752 counting only the distinct ones).

The product of its digits is 1458, while the sum is 32.

The square root of 9991112 is about 3160.8720315761. The cubic root of 9991112 is about 215.3796213651.

The spelling of 9991112 in words is "nine million, nine hundred ninety-one thousand, one hundred twelve".