440404041321 has 24 divisors (see below), whose sum is σ = 644261960160. Its totient is φ = 289858753536.

The previous prime is 440404041317. The next prime is 440404041323. The reversal of 440404041321 is 123140404044.

It is not a de Polignac number, because 440404041321 - 2² = 440404041317 is a prime.

It is a super-2 number, since 2×440404041321² (a number of 24 digits) contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (440404041323) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 843310 + ... + 1261736.

It is an arithmetic number, because the mean of its divisors is an integer number (26844248340).

Almost surely, 2^440404041321 is an apocalyptic number.

It is an amenable number.

440404041321 is a deficient number, since it is larger than the sum of its proper divisors (203857918839).

440404041321 is a wasteful number, since it uses less digits than its factorization.

440404041321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 419925 (or 419922 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 27.

Adding to 440404041321 its reverse (123140404044), we get a palindrome (563544445365).

The spelling of 440404041321 in words is "four hundred forty billion, four hundred four million, forty-one thousand, three hundred twenty-one".