9899982 has 40 divisors (see below), whose sum is σ = 23156496. Its totient is φ = 3155328.

The previous prime is 9899977. The next prime is 9899993. The reversal of 9899982 is 2899989.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 2398 + ... + 5054.

Almost surely, 2^9899982 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 9899982, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11578248).

9899982 is an abundant number, since it is smaller than the sum of its proper divisors (13256514).

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

9899982 is a wasteful number, since it uses less digits than its factorization.

9899982 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2694 (or 2685 counting only the distinct ones).

The product of its digits is 839808, while the sum is 54.

The square root of 9899982 is about 3146.4236841214. The cubic root of 9899982 is about 214.7227867667.

The spelling of 9899982 in words is "nine million, eight hundred ninety-nine thousand, nine hundred eighty-two".