4000404404444 has 24 divisors (see below), whose sum is σ = 8102084874240. Its totient is φ = 1692757016496.

The previous prime is 4000404404443. The next prime is 4000404404449. The reversal of 4000404404444 is 4444044040004.

It is a self number, because there is not a number n which added to its sum of digits gives 4000404404444.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4000404404443) 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, 904248332 + ... + 904252755.

It is an arithmetic number, because the mean of its divisors is an integer number (337586869760).

Almost surely, 2^{4000404404444} is an apocalyptic number.

It is an amenable number.

4000404404444 is an abundant number, since it is smaller than the sum of its proper divisors (4101680469796).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

4000404404444 is a wasteful number, since it uses less digits than its factorization.

4000404404444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1808501177 (or 1808501175 counting only the distinct ones).

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

Adding to 4000404404444 its reverse (4444044040004), we get a palindrome (8444448444448).

The spelling of 4000404404444 in words is "four trillion, four hundred four million, four hundred four thousand, four hundred forty-four".