9819992 has 96 divisors (see below), whose sum is σ = 24131520. Its totient is φ = 3709440.

The previous prime is 9819967. The next prime is 9820037. The reversal of 9819992 is 2999189.

It is a Harshad number since it is a multiple of its sum of digits (47).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 208913 + ... + 208959.

It is an arithmetic number, because the mean of its divisors is an integer number (251370).

Almost surely, 2^9819992 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 9819992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12065760).

9819992 is an abundant number, since it is smaller than the sum of its proper divisors (14311528).

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

9819992 is a wasteful number, since it uses less digits than its factorization.

9819992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121 (or 110 counting only the distinct ones).

The product of its digits is 104976, while the sum is 47.

The square root of 9819992 is about 3133.6866467469. The cubic root of 9819992 is about 214.1429155699.

The spelling of 9819992 in words is "nine million, eight hundred nineteen thousand, nine hundred ninety-two".