9999912 has 32 divisors (see below), whose sum is σ = 26923680.
Its totient is φ = 3076800.
The previous prime is 9999907. The next prime is 9999929. The reversal of 9999912 is 2199999.
It is an unprimeable number.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15714 + ... + 16337.
It is an arithmetic number, because the mean of its divisors is an integer number (841365).
Almost surely, 29999912 is an apocalyptic number.
It is an amenable number.
9999912 is an abundant number, since it is smaller than the sum of its proper divisors (16923768).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
9999912 is a wasteful number, since it uses less digits than its factorization.
9999912 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 32073 (or 32069 counting only the distinct ones).
The product of its digits is 118098, while the sum is 48.
The square root of 9999912 is about 3162.2637461161.
The cubic root of 9999912 is about 215.4428370338.
The spelling of 9999912 in words is "nine million, nine hundred ninety-nine thousand, nine hundred twelve".