9885798 has 48 divisors (see below), whose sum is σ = 23390640. Its totient is φ = 2999232.

The previous prime is 9885773. The next prime is 9885803. The reversal of 9885798 is 8975889.

9885798 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 19168 + ... + 19676.

It is an arithmetic number, because the mean of its divisors is an integer number (487305).

Almost surely, 2^9885798 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 9885798, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11695320).

9885798 is an abundant number, since it is smaller than the sum of its proper divisors (13504842).

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

9885798 is a wasteful number, since it uses less digits than its factorization.

9885798 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 613 (or 610 counting only the distinct ones).

The product of its digits is 1451520, while the sum is 54.

The square root of 9885798 is about 3144.1688885936. The cubic root of 9885798 is about 214.6201911698.

Subtracting from 9885798 its reverse (8975889), we obtain a palindrome (909909).

It can be divided in two parts, 988 and 5798, that added together give a triangular number (6786 = T₁₁₆).

The spelling of 9885798 in words is "nine million, eight hundred eighty-five thousand, seven hundred ninety-eight".