440400400444 has 12 divisors (see below), whose sum is σ = 775609623544. Its totient is φ = 218797650864.

The previous prime is 440400400441. The next prime is 440400400459. The reversal of 440400400444 is 444004004044.

It is a super-2 number, since 2×440400400444² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (440400400441) 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, 350636634 + ... + 350637889.

Almost surely, 2^440400400444 is an apocalyptic number.

It is an amenable number.

440400400444 is a deficient number, since it is larger than the sum of its proper divisors (335209223100).

440400400444 is a wasteful number, since it uses less digits than its factorization.

440400400444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 701274684 (or 701274682 counting only the distinct ones).

The product of its (nonzero) digits is 16384, while the sum is 28.

Adding to 440400400444 its reverse (444004004044), we get a palindrome (884404404488).

The spelling of 440400400444 in words is "four hundred forty billion, four hundred million, four hundred thousand, four hundred forty-four".