8440032 has 24 divisors (see below), whose sum is σ = 22155336. Its totient is φ = 2813312.

The previous prime is 8440031. The next prime is 8440037. The reversal of 8440032 is 2300448.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (24).

It is a super-2 number, since 2×8440032² = 142468280322048, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 8439990 and 8440008.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8440031) by changing a digit.

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, 43863 + ... + 44054.

It is an arithmetic number, because the mean of its divisors is an integer number (923139).

Almost surely, 2^8440032 is an apocalyptic number.

It is an amenable number.

8440032 is an abundant number, since it is smaller than the sum of its proper divisors (13715304).

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

8440032 is a wasteful number, since it uses less digits than its factorization.

8440032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87930 (or 87922 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 8440032 is about 2905.1733166887. The cubic root of 8440032 is about 203.6016833721.

The spelling of 8440032 in words is "eight million, four hundred forty thousand, thirty-two".