404404400424 has 32 divisors (see below), whose sum is σ = 1012787856000. Its totient is φ = 134564552832.

The previous prime is 404404400381. The next prime is 404404400461. The reversal of 404404400424 is 424004404404.

It is a junction number, because it is equal to n+sod(n) for n = 404404400391 and 404404400400.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14793184 + ... + 14820495.

It is an arithmetic number, because the mean of its divisors is an integer number (31649620500).

Almost surely, 2^404404400424 is an apocalyptic number.

It is an amenable number.

404404400424 is an abundant number, since it is smaller than the sum of its proper divisors (608383455576).

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

404404400424 is a wasteful number, since it uses less digits than its factorization.

404404400424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29614257 (or 29614253 counting only the distinct ones).

The product of its (nonzero) digits is 32768, while the sum is 30.

Adding to 404404400424 its reverse (424004404404), we get a palindrome (828408804828).

The spelling of 404404400424 in words is "four hundred four billion, four hundred four million, four hundred thousand, four hundred twenty-four".