440004223231 has 4 divisors (see below), whose sum is σ = 440671908600. Its totient is φ = 439336537864.

The previous prime is 440004223213. The next prime is 440004223277. The reversal of 440004223231 is 132322400044.

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 440004223231 - 2²¹ = 440002126079 is a prime.

It is a super-2 number, since 2×440004223231² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 440004223196 and 440004223205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (440004223031) 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, 333841696 + ... + 333843013.

It is an arithmetic number, because the mean of its divisors is an integer number (110167977150).

Almost surely, 2^440004223231 is an apocalyptic number.

440004223231 is a deficient number, since it is larger than the sum of its proper divisors (667685369).

440004223231 is an equidigital number, since it uses as much as digits as its factorization.

440004223231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 667685368.

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

Adding to 440004223231 its reverse (132322400044), we get a palindrome (572326623275).

The spelling of 440004223231 in words is "four hundred forty billion, four million, two hundred twenty-three thousand, two hundred thirty-one".