404404042220 has 24 divisors (see below), whose sum is σ = 849272939424. Its totient is φ = 161756959616.

The previous prime is 404404042213. The next prime is 404404042247. The reversal of 404404042220 is 22240404404.

It is a self number, because there is not a number n which added to its sum of digits gives 404404042220.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 469409 + ... + 1014471.

It is an arithmetic number, because the mean of its divisors is an integer number (35386372476).

Almost surely, 2^404404042220 is an apocalyptic number.

It is an amenable number.

404404042220 is an abundant number, since it is smaller than the sum of its proper divisors (444868897204).

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

404404042220 is a wasteful number, since it uses less digits than its factorization.

404404042220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 582169 (or 582167 counting only the distinct ones).

The product of its (nonzero) digits is 8192, while the sum is 26.

Adding to 404404042220 its reverse (22240404404), we get a palindrome (426644446624).

The spelling of 404404042220 in words is "four hundred four billion, four hundred four million, forty-two thousand, two hundred twenty".