400440004404 has 36 divisors (see below), whose sum is σ = 1027023816672. Its totient is φ = 121345455440.

The previous prime is 400440004403. The next prime is 400440004417. The reversal of 400440004404 is 404400044004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400440004403) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 137891112 + ... + 137894015.

It is an arithmetic number, because the mean of its divisors is an integer number (28528439352).

Almost surely, 2^400440004404 is an apocalyptic number.

400440004404 is a gapful number since it is divisible by the number (44) formed by its first and last digit.

It is an amenable number.

400440004404 is an abundant number, since it is smaller than the sum of its proper divisors (626583812268).

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

400440004404 is a wasteful number, since it uses less digits than its factorization.

400440004404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 275785156 (or 275785143 counting only the distinct ones).

The product of its (nonzero) digits is 4096, while the sum is 24.

Adding to 400440004404 its reverse (404400044004), we get a palindrome (804840048408).

The spelling of 400440004404 in words is "four hundred billion, four hundred forty million, four thousand, four hundred four".