9993992 has 32 divisors (see below), whose sum is σ = 19291800. Its totient is φ = 4852224.

The previous prime is 9993989. The next prime is 9994001. The reversal of 9993992 is 2993999.

It can be written as a sum of positive squares in 4 ways, for example, as 8726116 + 1267876 = 2954^2 + 1126^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 9993992.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 63578 + ... + 63734.

Almost surely, 2^9993992 is an apocalyptic number.

It is an amenable number.

9993992 is a deficient number, since it is larger than the sum of its proper divisors (9297808).

9993992 is a wasteful number, since it uses less digits than its factorization.

9993992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 345 (or 341 counting only the distinct ones).

The product of its digits is 354294, while the sum is 50.

The square root of 9993992 is about 3161.3275692342. The cubic root of 9993992 is about 215.4003142142.

The spelling of 9993992 in words is "nine million, nine hundred ninety-three thousand, nine hundred ninety-two".