440244043243 has 4 divisors (see below), whose sum is σ = 447461158768. Its totient is φ = 433026927720.

The previous prime is 440244043201. The next prime is 440244043271. The reversal of 440244043243 is 342340442044.

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 440244043243 - 2¹³ = 440244035051 is a prime.

It is a super-2 number, since 2×440244043243² (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 = 440244043199 and 440244043208.

It is not an unprimeable number, because it can be changed into a prime (440248043243) 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, 3608557671 + ... + 3608557792.

It is an arithmetic number, because the mean of its divisors is an integer number (111865289692).

Almost surely, 2^440244043243 is an apocalyptic number.

440244043243 is a deficient number, since it is larger than the sum of its proper divisors (7217115525).

440244043243 is an equidigital number, since it uses as much as digits as its factorization.

440244043243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7217115524.

The product of its (nonzero) digits is 147456, while the sum is 34.

Adding to 440244043243 its reverse (342340442044), we get a palindrome (782584485287).

The spelling of 440244043243 in words is "four hundred forty billion, two hundred forty-four million, forty-three thousand, two hundred forty-three".