9989912 has 16 divisors (see below), whose sum is σ = 19545840.
Its totient is φ = 4777696.
The previous prime is 9989899. The next prime is 9989921. The reversal of 9989912 is 2199899.
It is a congruent number.
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, 26963 + ... + 27330.
It is an arithmetic number, because the mean of its divisors is an integer number (1221615).
Almost surely, 29989912 is an apocalyptic number.
9989912 is a gapful number since it is divisible by the number (92) formed by its first and last digit.
It is an amenable number.
9989912 is a deficient number, since it is larger than the sum of its proper divisors (9555928).
9989912 is a wasteful number, since it uses less digits than its factorization.
9989912 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 54322 (or 54318 counting only the distinct ones).
The product of its digits is 104976, while the sum is 47.
The square root of 9989912 is about 3160.6822048412.
The cubic root of 9989912 is about 215.3709981710.
It can be divided in two parts, 9989 and 912, that added together give a palindrome (10901).
The spelling of 9989912 in words is "nine million, nine hundred eighty-nine thousand, nine hundred twelve".