9885559398 has 96 divisors (see below), whose sum is σ = 24780657888. Its totient is φ = 2602490880.

The previous prime is 9885559393. The next prime is 9885559501. The reversal of 9885559398 is 8939555889.

9885559398 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×9885559398² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9885559391) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 129640 + ... + 191252.

It is an arithmetic number, because the mean of its divisors is an integer number (258131853).

Almost surely, 2^9885559398 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 9885559398, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12390328944).

9885559398 is an abundant number, since it is smaller than the sum of its proper divisors (14895098490).

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

9885559398 is a wasteful number, since it uses less digits than its factorization.

9885559398 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61670 (or 61659 counting only the distinct ones).

The product of its digits is 139968000, while the sum is 69.

The square root of 9885559398 is about 99426.1504736053. The cubic root of 9885559398 is about 2146.1846447669.

The spelling of 9885559398 in words is "nine billion, eight hundred eighty-five million, five hundred fifty-nine thousand, three hundred ninety-eight".