9903992 has 16 divisors (see below), whose sum is σ = 21222960. Its totient is φ = 4244544.

The previous prime is 9903989. The next prime is 9904019. The reversal of 9903992 is 2993099.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 88373 + ... + 88484.

It is an arithmetic number, because the mean of its divisors is an integer number (1326435).

Almost surely, 2^9903992 is an apocalyptic number.

It is an amenable number.

9903992 is an abundant number, since it is smaller than the sum of its proper divisors (11318968).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

9903992 is a wasteful number, since it uses less digits than its factorization.

9903992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 176870 (or 176866 counting only the distinct ones).

The product of its (nonzero) digits is 39366, while the sum is 41.

The square root of 9903992 is about 3147.0608510164. The cubic root of 9903992 is about 214.7517740971.

The spelling of 9903992 in words is "nine million, nine hundred three thousand, nine hundred ninety-two".