404480816 has 20 divisors (see below), whose sum is σ = 824928600. Its totient is φ = 191596032.

The previous prime is 404480803. The next prime is 404480819. The reversal of 404480816 is 618084404.

It is a hoax number, since the sum of its digits (35) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (404480819) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 664961 + ... + 665568.

It is an arithmetic number, because the mean of its divisors is an integer number (41246430).

Almost surely, 2^404480816 is an apocalyptic number.

It is an amenable number.

404480816 is an abundant number, since it is smaller than the sum of its proper divisors (420447784).

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

404480816 is a wasteful number, since it uses less digits than its factorization.

404480816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1330556 (or 1330550 counting only the distinct ones).

The product of its (nonzero) digits is 24576, while the sum is 35.

The square root of 404480816 is about 20111.7084306630. The cubic root of 404480816 is about 739.5473345516.

The spelling of 404480816 in words is "four hundred four million, four hundred eighty thousand, eight hundred sixteen".