440030421444 has 48 divisors (see below), whose sum is σ = 1061053894656. Its totient is φ = 141785162400.

The previous prime is 440030421443. The next prime is 440030421503. The reversal of 440030421444 is 444124030044.

It is not an unprimeable number, because it can be changed into a prime (440030421443) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 336822 + ... + 996749.

It is an arithmetic number, because the mean of its divisors is an integer number (22105289472).

Almost surely, 2^440030421444 is an apocalyptic number.

It is an amenable number.

440030421444 is an abundant number, since it is smaller than the sum of its proper divisors (621023473212).

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

440030421444 is a wasteful number, since it uses less digits than its factorization.

440030421444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1334496 (or 1334494 counting only the distinct ones).

The product of its (nonzero) digits is 24576, while the sum is 30.

Adding to 440030421444 its reverse (444124030044), we get a palindrome (884154451488).

The spelling of 440030421444 in words is "four hundred forty billion, thirty million, four hundred twenty-one thousand, four hundred forty-four".