440044313121 has 24 divisors (see below), whose sum is σ = 753326892864. Its totient is φ = 251453892240.

The previous prime is 440044313119. The next prime is 440044313131. The reversal of 440044313121 is 121313440044.

It is not a de Polignac number, because 440044313121 - 2¹ = 440044313119 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (440044313131) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 129347010 + ... + 129350411.

It is an arithmetic number, because the mean of its divisors is an integer number (31388620536).

Almost surely, 2^440044313121 is an apocalyptic number.

It is an amenable number.

440044313121 is a deficient number, since it is larger than the sum of its proper divisors (313282579743).

440044313121 is an equidigital number, since it uses as much as digits as its factorization.

440044313121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 258697443 (or 258697431 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 27.

Adding to 440044313121 its reverse (121313440044), we get a palindrome (561357753165).

The spelling of 440044313121 in words is "four hundred forty billion, forty-four million, three hundred thirteen thousand, one hundred twenty-one".