9789912 has 96 divisors (see below), whose sum is σ = 29652480. Its totient is φ = 2892480.

The previous prime is 9789887. The next prime is 9789937. The reversal of 9789912 is 2199879.

It is an interprime number because it is at equal distance from previous prime (9789887) and next prime (9789937).

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 23 ways as a sum of consecutive naturals, for example, 37093 + ... + 37355.

It is an arithmetic number, because the mean of its divisors is an integer number (308880).

Almost surely, 2^9789912 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 9789912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14826240).

9789912 is an abundant number, since it is smaller than the sum of its proper divisors (19862568).

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

9789912 is a wasteful number, since it uses less digits than its factorization.

9789912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 333 (or 326 counting only the distinct ones).

The product of its digits is 81648, while the sum is 45.

The square root of 9789912 is about 3128.8835069398. The cubic root of 9789912 is about 213.9240421023.

It can be divided in two parts, 9789 and 912, that added together give a palindrome (10701).

The spelling of 9789912 in words is "nine million, seven hundred eighty-nine thousand, nine hundred twelve".