9999993999904 has 12 divisors (see below), whose sum is σ = 19687488187374. Its totient is φ = 4999996999936.

The previous prime is 9999993999857. The next prime is 9999993999913. The reversal of 9999993999904 is 4099993999999.

It can be written as a sum of positive squares in only one way, i.e., 9586776447504 + 413217552400 = 3096252^2 + 642820^2 .

It is a super-3 number, since 3×9999993999904³ (a number of 40 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 9999993999797 and 9999993999806.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156249906217 + ... + 156249906280.

Almost surely, 2^{9999993999904} is an apocalyptic number.

It is an amenable number.

9999993999904 is a deficient number, since it is larger than the sum of its proper divisors (9687494187470).

9999993999904 is a wasteful number, since it uses less digits than its factorization.

9999993999904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 312499812507 (or 312499812499 counting only the distinct ones).

The product of its (nonzero) digits is 41841412812, while the sum is 97.

The spelling of 9999993999904 in words is "nine trillion, nine hundred ninety-nine billion, nine hundred ninety-three million, nine hundred ninety-nine thousand, nine hundred four".