440556 has 12 divisors (see below), whose sum is σ = 1027992. Its totient is φ = 146848.

The previous prime is 440551. The next prime is 440567. The reversal of 440556 is 655044.

It is a tau number, because it is divible by the number of its divisors (12).

It is a plaindrome in base 13.

It is not an unprimeable number, because it can be changed into a prime (440551) 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, 18345 + ... + 18368.

It is an arithmetic number, because the mean of its divisors is an integer number (85666).

2⁴⁴⁰⁵⁵⁶ is an apocalyptic number.

It is an amenable number.

440556 is an abundant number, since it is smaller than the sum of its proper divisors (587436).

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

440556 is a wasteful number, since it uses less digits than its factorization.

440556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36720 (or 36718 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 24.

The square root of 440556 is about 663.7439265259. The cubic root of 440556 is about 76.0910727238.

The spelling of 440556 in words is "four hundred forty thousand, five hundred fifty-six".