440134220 has 12 divisors (see below), whose sum is σ = 924281904. Its totient is φ = 176053680.

The previous prime is 440134217. The next prime is 440134231. The reversal of 440134220 is 22431044.

It is a Harshad number since it is a multiple of its sum of digits (20), and also a Moran number because the ratio is a prime number: 22006711 = 440134220 / (4 + 4 + 0 + 1 + 3 + 4 + 2 + 2 + 0).

It is a junction number, because it is equal to n+sod(n) for n = 440134192 and 440134201.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11003336 + ... + 11003375.

It is an arithmetic number, because the mean of its divisors is an integer number (77023492).

Almost surely, 2^440134220 is an apocalyptic number.

It is an amenable number.

440134220 is an abundant number, since it is smaller than the sum of its proper divisors (484147684).

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

440134220 is a wasteful number, since it uses less digits than its factorization.

440134220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22006720 (or 22006718 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 440134220 is about 20979.3760631721. The cubic root of 440134220 is about 760.6678225139.

Adding to 440134220 its reverse (22431044), we get a palindrome (462565264).

The spelling of 440134220 in words is "four hundred forty million, one hundred thirty-four thousand, two hundred twenty".