9991412232 has 64 divisors (see below), whose sum is σ = 25598242560. Its totient is φ = 3248078400.

The previous prime is 9991412213. The next prime is 9991412237. The reversal of 9991412232 is 2322141999.

It is not an unprimeable number, because it can be changed into a prime (9991412237) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 706107 + ... + 720117.

It is an arithmetic number, because the mean of its divisors is an integer number (399972540).

Almost surely, 2^9991412232 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 9991412232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12799121280).

9991412232 is an abundant number, since it is smaller than the sum of its proper divisors (15606830328).

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

9991412232 is a wasteful number, since it uses less digits than its factorization.

9991412232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14754 (or 14750 counting only the distinct ones).

The product of its digits is 69984, while the sum is 42.

The square root of 9991412232 is about 99957.0519373196. The cubic root of 9991412232 is about 2153.8177872279.

The spelling of 9991412232 in words is "nine billion, nine hundred ninety-one million, four hundred twelve thousand, two hundred thirty-two".