9439872 has 128 divisors (see below), whose sum is σ = 28331520. Its totient is φ = 2764800.

The previous prime is 9439853. The next prime is 9439873. The reversal of 9439872 is 2789349.

It is a tau number, because it is divible by the number of its divisors (128).

It is a super-2 number, since 2×9439872² = 178222366752768, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (9439873) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 154722 + ... + 154782.

It is an arithmetic number, because the mean of its divisors is an integer number (221340).

Almost surely, 2^9439872 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 9439872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14165760).

9439872 is an abundant number, since it is smaller than the sum of its proper divisors (18891648).

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

9439872 is a wasteful number, since it uses less digits than its factorization.

9439872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122 (or 110 counting only the distinct ones).

The product of its digits is 108864, while the sum is 42.

The square root of 9439872 is about 3072.4374688511. The cubic root of 9439872 is about 211.3434058187.

The spelling of 9439872 in words is "nine million, four hundred thirty-nine thousand, eight hundred seventy-two".