440444004044 has 24 divisors (see below), whose sum is σ = 861356126736. Its totient is φ = 195318848000.

The previous prime is 440444004041. The next prime is 440444004083. The reversal of 440444004044 is 440400444044.

It is a super-2 number, since 2×440444004044² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 440444004044.

It is not an unprimeable number, because it can be changed into a prime (440444004041) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 122072477 + ... + 122076084.

It is an arithmetic number, because the mean of its divisors is an integer number (35889838614).

Almost surely, 2^440444004044 is an apocalyptic number.

440444004044 is a gapful number since it is divisible by the number (44) formed by its first and last digit.

It is an amenable number.

440444004044 is a deficient number, since it is larger than the sum of its proper divisors (420912122692).

440444004044 is a wasteful number, since it uses less digits than its factorization.

440444004044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 244148617 (or 244148615 counting only the distinct ones).

The product of its (nonzero) digits is 65536, while the sum is 32.

Adding to 440444004044 its reverse (440400444044), we get a palindrome (880844448088).

Subtracting from 440444004044 its reverse (440400444044), we obtain a square (43560000 = 6600²).

The spelling of 440444004044 in words is "four hundred forty billion, four hundred forty-four million, four thousand, forty-four".