404404222400 has 42 divisors (see below), whose sum is σ = 995087143680. Its totient is φ = 161761688320.

The previous prime is 404404222393. The next prime is 404404222427. The reversal of 404404222400 is 4222404404.

It is a self number, because there is not a number n which added to its sum of digits gives 404404222400.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 126374720 + ... + 126377919.

It is an arithmetic number, because the mean of its divisors is an integer number (23692551040).

Almost surely, 2^404404222400 is an apocalyptic number.

404404222400 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

404404222400 is an abundant number, since it is smaller than the sum of its proper divisors (590682921280).

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

404404222400 is a wasteful number, since it uses less digits than its factorization.

404404222400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 252752661 (or 252752646 counting only the distinct ones).

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

Adding to 404404222400 its reverse (4222404404), we get a palindrome (408626626804).

The spelling of 404404222400 in words is "four hundred four billion, four hundred four million, two hundred twenty-two thousand, four hundred".