440440441321 has 4 divisors (see below), whose sum is σ = 463621517200. Its totient is φ = 417259365444.

The previous prime is 440440441297. The next prime is 440440441367. The reversal of 440440441321 is 123144044044.

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 440440441321 - 2⁷ = 440440441193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (440440444321) 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, 11590537911 + ... + 11590537948.

It is an arithmetic number, because the mean of its divisors is an integer number (115905379300).

Almost surely, 2^440440441321 is an apocalyptic number.

It is an amenable number.

440440441321 is a deficient number, since it is larger than the sum of its proper divisors (23181075879).

440440441321 is a wasteful number, since it uses less digits than its factorization.

440440441321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23181075878.

The product of its (nonzero) digits is 24576, while the sum is 31.

Adding to 440440441321 its reverse (123144044044), we get a palindrome (563584485365).

The spelling of 440440441321 in words is "four hundred forty billion, four hundred forty million, four hundred forty-one thousand, three hundred twenty-one".