440780 has 12 divisors (see below), whose sum is σ = 925680. Its totient is φ = 176304.

The previous prime is 440773. The next prime is 440807. The reversal of 440780 is 87044.

It is a hoax number, since the sum of its digits (23) coincides with the sum of the digits of its distinct prime factors.

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, 11000 + ... + 11039.

It is an arithmetic number, because the mean of its divisors is an integer number (77140).

2⁴⁴⁰⁷⁸⁰ is an apocalyptic number.

It is an amenable number.

440780 is an abundant number, since it is smaller than the sum of its proper divisors (484900).

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

440780 is a wasteful number, since it uses less digits than its factorization.

440780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22048 (or 22046 counting only the distinct ones).

The product of its (nonzero) digits is 896, while the sum is 23.

The square root of 440780 is about 663.9126448562. The cubic root of 440780 is about 76.1039666672.

The spelling of 440780 in words is "four hundred forty thousand, seven hundred eighty".