440478 has 20 divisors (see below), whose sum is σ = 987360. Its totient is φ = 146772.

The previous prime is 440471. The next prime is 440497. The reversal of 440478 is 874044.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (440471) by changing a digit.

440478 is an untouchable number, because it is not equal to the sum of proper divisors of any 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 9 ways as a sum of consecutive naturals, for example, 1198 + ... + 1521.

It is an arithmetic number, because the mean of its divisors is an integer number (49368).

2⁴⁴⁰⁴⁷⁸ is an apocalyptic number.

440478 is an abundant number, since it is smaller than the sum of its proper divisors (546882).

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

440478 is a wasteful number, since it uses less digits than its factorization.

440478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2733 (or 2724 counting only the distinct ones).

The product of its (nonzero) digits is 3584, while the sum is 27.

The square root of 440478 is about 663.6851663251. The cubic root of 440478 is about 76.0865818426.

The spelling of 440478 in words is "four hundred forty thousand, four hundred seventy-eight".