440320441321 has 32 divisors (see below), whose sum is σ = 453774182400. Its totient is φ = 427153858560.

The previous prime is 440320441271. The next prime is 440320441339. The reversal of 440320441321 is 123144023044.

It is a cyclic number.

It is not a de Polignac number, because 440320441321 - 2¹⁵ = 440320408553 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 440320441321.

It is not an unprimeable number, because it can be changed into a prime (440320441921) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 845144541 + ... + 845145061.

It is an arithmetic number, because the mean of its divisors is an integer number (14180443200).

Almost surely, 2^440320441321 is an apocalyptic number.

It is an amenable number.

440320441321 is a deficient number, since it is larger than the sum of its proper divisors (13453741079).

440320441321 is a wasteful number, since it uses less digits than its factorization.

440320441321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1369.

The product of its (nonzero) digits is 9216, while the sum is 28.

Adding to 440320441321 its reverse (123144023044), we get a palindrome (563464464365).

The spelling of 440320441321 in words is "four hundred forty billion, three hundred twenty million, four hundred forty-one thousand, three hundred twenty-one".