9988841 has 4 divisors (see below), whose sum is σ = 10017492. Its totient is φ = 9960192.

The previous prime is 9988817. The next prime is 9988873. The reversal of 9988841 is 1488899.

9988841 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1488899 = 31 ⋅48029.

It can be written as a sum of positive squares in 2 ways, for example, as 2310400 + 7678441 = 1520^2 + 2771^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9988841 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (9987841) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13796 + ... + 14501.

It is an arithmetic number, because the mean of its divisors is an integer number (2504373).

Almost surely, 2^9988841 is an apocalyptic number.

It is an amenable number.

9988841 is a deficient number, since it is larger than the sum of its proper divisors (28651).

9988841 is a wasteful number, since it uses less digits than its factorization.

9988841 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28650.

The product of its digits is 165888, while the sum is 47.

The square root of 9988841 is about 3160.5127748516. The cubic root of 9988841 is about 215.3633013871.

The spelling of 9988841 in words is "nine million, nine hundred eighty-eight thousand, eight hundred forty-one".