7989912 has 96 divisors (see below), whose sum is σ = 25159680. Its totient is φ = 2243520.

The previous prime is 7989907. The next prime is 7989929. The reversal of 7989912 is 2199897.

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

It is a congruent number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 41737 + ... + 41927.

It is an arithmetic number, because the mean of its divisors is an integer number (262080).

Almost surely, 2^7989912 is an apocalyptic number.

7989912 is a gapful number since it is divisible by the number (72) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7989912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12579840).

7989912 is an abundant number, since it is smaller than the sum of its proper divisors (17169768).

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

7989912 is a wasteful number, since it uses less digits than its factorization.

7989912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 293 (or 286 counting only the distinct ones).

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

The square root of 7989912 is about 2826.6432388966. The cubic root of 7989912 is about 199.9158979725.

The spelling of 7989912 in words is "seven million, nine hundred eighty-nine thousand, nine hundred twelve".