404684216 has 8 divisors (see below), whose sum is σ = 758782920. Its totient is φ = 202342104.

The previous prime is 404684177. The next prime is 404684233. The reversal of 404684216 is 612486404.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25292756 + ... + 25292771.

It is an arithmetic number, because the mean of its divisors is an integer number (94847865).

Almost surely, 2^404684216 is an apocalyptic number.

It is an amenable number.

404684216 is a deficient number, since it is larger than the sum of its proper divisors (354098704).

404684216 is a wasteful number, since it uses less digits than its factorization.

404684216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50585533 (or 50585529 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 35.

The square root of 404684216 is about 20116.7645509908. The cubic root of 404684216 is about 739.6712783948.

The spelling of 404684216 in words is "four hundred four million, six hundred eighty-four thousand, two hundred sixteen".