440240 has 20 divisors (see below), whose sum is σ = 1023744. Its totient is φ = 176064.

The previous prime is 440239. The next prime is 440261. The reversal of 440240 is 42044.

440240 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (20).

It is a super-2 number, since 2×440240² = 387622515200, which contains 22 as substring.

It is an unprimeable number.

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, 2672 + ... + 2831.

2⁴⁴⁰²⁴⁰ is an apocalyptic number.

440240 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

440240 is an abundant number, since it is smaller than the sum of its proper divisors (583504).

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

440240 is a wasteful number, since it uses less digits than its factorization.

440240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5516 (or 5510 counting only the distinct ones).

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

The square root of 440240 is about 663.5058402154. The cubic root of 440240 is about 76.0728756197.

Adding to 440240 its reverse (42044), we get a palindrome (482284).

The spelling of 440240 in words is "four hundred forty thousand, two hundred forty", and thus it is an iban number.