440004221323 has 4 divisors (see below), whose sum is σ = 441627853408. Its totient is φ = 438380589240.

The previous prime is 440004221303. The next prime is 440004221359. The reversal of 440004221323 is 323122400044.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 440004221323 - 2³³ = 431414286731 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (440004221303) 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, 811815636 + ... + 811816177.

It is an arithmetic number, because the mean of its divisors is an integer number (110406963352).

Almost surely, 2^440004221323 is an apocalyptic number.

440004221323 is a deficient number, since it is larger than the sum of its proper divisors (1623632085).

440004221323 is a wasteful number, since it uses less digits than its factorization.

440004221323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1623632084.

The product of its (nonzero) digits is 4608, while the sum is 25.

Adding to 440004221323 its reverse (323122400044), we get a palindrome (763126621367).

The spelling of 440004221323 in words is "four hundred forty billion, four million, two hundred twenty-one thousand, three hundred twenty-three".