9989125032 has 128 divisors (see below), whose sum is σ = 26504755200. Its totient is φ = 3130820352.

The previous prime is 9989125031. The next prime is 9989125033. The reversal of 9989125032 is 2305219899.

It is an interprime number because it is at equal distance from previous prime (9989125031) and next prime (9989125033).

It is not an unprimeable number, because it can be changed into a prime (9989125031) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12049194 + ... + 12050022.

It is an arithmetic number, because the mean of its divisors is an integer number (207068400).

Almost surely, 2^9989125032 is an apocalyptic number.

9989125032 is a gapful number since it is divisible by the number (92) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 9989125032, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13252377600).

9989125032 is an abundant number, since it is smaller than the sum of its proper divisors (16515630168).

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

9989125032 is a wasteful number, since it uses less digits than its factorization.

9989125032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1207 (or 1203 counting only the distinct ones).

The product of its (nonzero) digits is 349920, while the sum is 48.

The square root of 9989125032 is about 99945.6103688401. The cubic root of 9989125032 is about 2153.6534264791.

The spelling of 9989125032 in words is "nine billion, nine hundred eighty-nine million, one hundred twenty-five thousand, thirty-two".