7989424 has 40 divisors (see below), whose sum is σ = 16717680. Its totient is φ = 3686400.

The previous prime is 7989419. The next prime is 7989427. The reversal of 7989424 is 4249897.

It is not an unprimeable number, because it can be changed into a prime (7989427) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12144 + ... + 12784.

It is an arithmetic number, because the mean of its divisors is an integer number (417942).

Almost surely, 2^7989424 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 7989424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8358840).

7989424 is an abundant number, since it is smaller than the sum of its proper divisors (8728256).

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

7989424 is a wasteful number, since it uses less digits than its factorization.

7989424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 709 (or 703 counting only the distinct ones).

The product of its digits is 145152, while the sum is 43.

The square root of 7989424 is about 2826.5569161084. The cubic root of 7989424 is about 199.9118278007.

The spelling of 7989424 in words is "seven million, nine hundred eighty-nine thousand, four hundred twenty-four".