9999404 has 24 divisors (see below), whose sum is σ = 18044208. Its totient is φ = 4846400.

The previous prime is 9999401. The next prime is 9999419. The reversal of 9999404 is 4049999.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (9999401) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21179 + ... + 21645.

It is an arithmetic number, because the mean of its divisors is an integer number (751842).

Almost surely, 2^9999404 is an apocalyptic number.

It is an amenable number.

9999404 is a deficient number, since it is larger than the sum of its proper divisors (8044804).

9999404 is a wasteful number, since it uses less digits than its factorization.

9999404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 625 (or 623 counting only the distinct ones).

The product of its (nonzero) digits is 104976, while the sum is 44.

The square root of 9999404 is about 3162.1834228899. The cubic root of 9999404 is about 215.4391887746.

The spelling of 9999404 in words is "nine million, nine hundred ninety-nine thousand, four hundred four".