9819912 has 16 divisors (see below), whose sum is σ = 24549840. Its totient is φ = 3273296.

The previous prime is 9819907. The next prime is 9819913. The reversal of 9819912 is 2199189.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (9819913) by changing a digit.

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, 204558 + ... + 204605.

It is an arithmetic number, because the mean of its divisors is an integer number (1534365).

Almost surely, 2^9819912 is an apocalyptic number.

It is an amenable number.

9819912 is an abundant number, since it is smaller than the sum of its proper divisors (14729928).

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

9819912 is a wasteful number, since it uses less digits than its factorization.

9819912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 409172 (or 409168 counting only the distinct ones).

The product of its digits is 11664, while the sum is 39.

The square root of 9819912 is about 3133.6738822028. The cubic root of 9819912 is about 214.1423340528.

It can be divided in two parts, 9819 and 912, that added together give a triangular number (10731 = T₁₄₆).

The spelling of 9819912 in words is "nine million, eight hundred nineteen thousand, nine hundred twelve".