404424424444 has 24 divisors (see below), whose sum is σ = 738564559488. Its totient is φ = 193407178800.

The previous prime is 404424424409. The next prime is 404424424447. The reversal of 404424424444 is 444424424404.

It is a junction number, because it is equal to n+sod(n) for n = 404424424397 and 404424424406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (404424424447) 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, 1279239 + ... + 1563745.

It is an arithmetic number, because the mean of its divisors is an integer number (30773523312).

Almost surely, 2^404424424444 is an apocalyptic number.

It is an amenable number.

404424424444 is a deficient number, since it is larger than the sum of its proper divisors (334140135044).

404424424444 is a wasteful number, since it uses less digits than its factorization.

404424424444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 299985 (or 299983 counting only the distinct ones).

The product of its (nonzero) digits is 1048576, while the sum is 40.

Subtracting from 404424424444 its sum of digits (40), we obtain a palindrome (404424424404).

Adding to 404424424444 its reverse (444424424404), we get a palindrome (848848848848).

The spelling of 404424424444 in words is "four hundred four billion, four hundred twenty-four million, four hundred twenty-four thousand, four hundred forty-four".