9639424 has 40 divisors (see below), whose sum is σ = 19617048. Its totient is φ = 4730880.

The previous prime is 9639401. The next prime is 9639433. The reversal of 9639424 is 4249369.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34164 + ... + 34444.

Almost surely, 2^9639424 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 9639424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9808524).

9639424 is an abundant number, since it is smaller than the sum of its proper divisors (9977624).

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

9639424 is an equidigital number, since it uses as much as digits as its factorization.

9639424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 366 (or 350 counting only the distinct ones).

The product of its digits is 46656, while the sum is 37.

The square root of 9639424 is about 3104.7421793122. The cubic root of 9639424 is about 212.8222487903.

The spelling of 9639424 in words is "nine million, six hundred thirty-nine thousand, four hundred twenty-four".