440044244421 has 4 divisors (see below), whose sum is σ = 586725659232. Its totient is φ = 293362829612.

The previous prime is 440044244363. The next prime is 440044244447. The reversal of 440044244421 is 124442440044.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 440044244421 - 2¹⁵ = 440044211653 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (440044244921) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 73340707401 + ... + 73340707406.

It is an arithmetic number, because the mean of its divisors is an integer number (146681414808).

Almost surely, 2^440044244421 is an apocalyptic number.

It is an amenable number.

440044244421 is a deficient number, since it is larger than the sum of its proper divisors (146681414811).

440044244421 is a wasteful number, since it uses less digits than its factorization.

440044244421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146681414810.

The product of its (nonzero) digits is 65536, while the sum is 33.

Adding to 440044244421 its reverse (124442440044), we get a palindrome (564486684465).

The spelling of 440044244421 in words is "four hundred forty billion, forty-four million, two hundred forty-four thousand, four hundred twenty-one".