404406616 has 16 divisors (see below), whose sum is σ = 776757240. Its totient is φ = 197271360.

The previous prime is 404406599. The next prime is 404406617. The reversal of 404406616 is 616604404.

It is a super-2 number, since 2×404406616² = 327089422129142912, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (404406617) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 616146 + ... + 616801.

Almost surely, 2^404406616 is an apocalyptic number.

It is an amenable number.

404406616 is a deficient number, since it is larger than the sum of its proper divisors (372350624).

404406616 is a wasteful number, since it uses less digits than its factorization.

404406616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1232994 (or 1232990 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 31.

The square root of 404406616 is about 20109.8636494632. The cubic root of 404406616 is about 739.5021096890.

The spelling of 404406616 in words is "four hundred four million, four hundred six thousand, six hundred sixteen".