9969912 has 64 divisors (see below), whose sum is σ = 28029600. Its totient is φ = 3283200.

The previous prime is 9969907. The next prime is 9969913. The reversal of 9969912 is 2199699.

It is a happy number.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9969913) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21588 + ... + 22044.

Almost surely, 2^9969912 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 9969912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14014800).

9969912 is an abundant number, since it is smaller than the sum of its proper divisors (18059688).

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

9969912 is a wasteful number, since it uses less digits than its factorization.

9969912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 573 (or 563 counting only the distinct ones).

The product of its digits is 78732, while the sum is 45.

The square root of 9969912 is about 3157.5167457988. The cubic root of 9969912 is about 215.2271764944.

The spelling of 9969912 in words is "nine million, nine hundred sixty-nine thousand, nine hundred twelve".