404388319228 has 12 divisors (see below), whose sum is σ = 738448235280. Its totient is φ = 193403109152.

The previous prime is 404388319219. The next prime is 404388319267. The reversal of 404388319228 is 822913883404.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 2197762513 + ... + 2197762696.

It is an arithmetic number, because the mean of its divisors is an integer number (61537352940).

Almost surely, 2^404388319228 is an apocalyptic number.

It is an amenable number.

404388319228 is a deficient number, since it is larger than the sum of its proper divisors (334059916052).

404388319228 is a wasteful number, since it uses less digits than its factorization.

404388319228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4395525236 (or 4395525234 counting only the distinct ones).

The product of its (nonzero) digits is 2654208, while the sum is 52.

The spelling of 404388319228 in words is "four hundred four billion, three hundred eighty-eight million, three hundred nineteen thousand, two hundred twenty-eight".