9990192 has 20 divisors (see below), whose sum is σ = 25808120. Its totient is φ = 3330048.

The previous prime is 9990187. The next prime is 9990193. The reversal of 9990192 is 2910999.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 9990192.

It is not an unprimeable number, because it can be changed into a prime (9990193) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 104017 + ... + 104112.

It is an arithmetic number, because the mean of its divisors is an integer number (1290406).

Almost surely, 2^9990192 is an apocalyptic number.

It is an amenable number.

9990192 is an abundant number, since it is smaller than the sum of its proper divisors (15817928).

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

9990192 is a wasteful number, since it uses less digits than its factorization.

9990192 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 208140 (or 208134 counting only the distinct ones).

The product of its (nonzero) digits is 13122, while the sum is 39.

The square root of 9990192 is about 3160.7264987658. The cubic root of 9990192 is about 215.3730103114.

The spelling of 9990192 in words is "nine million, nine hundred ninety thousand, one hundred ninety-two".