440024 has 16 divisors (see below), whose sum is σ = 888720. Its totient is φ = 203040.

The previous prime is 440023. The next prime is 440039. The reversal of 440024 is 420044.

It is a super-2 number, since 2×440024² = 387242241152, which contains 22 as substring.

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 439990 and 440008.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (440023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2012 + ... + 2219.

It is an arithmetic number, because the mean of its divisors is an integer number (55545).

2⁴⁴⁰⁰²⁴ is an apocalyptic number.

It is an amenable number.

440024 is an abundant number, since it is smaller than the sum of its proper divisors (448696).

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

440024 is a wasteful number, since it uses less digits than its factorization.

440024 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4250 (or 4246 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 14.

The square root of 440024 is about 663.3430485051. The cubic root of 440024 is about 76.0604320819.

Adding to 440024 its reverse (420044), we get a palindrome (860068).

The spelling of 440024 in words is "four hundred forty thousand, twenty-four", and thus it is an iban number.