9988849 has 4 divisors (see below), whose sum is σ = 10757236. Its totient is φ = 9220464.

The previous prime is 9988817. The next prime is 9988873. The reversal of 9988849 is 9488899.

9988849 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.

It can be written as a sum of positive squares in 2 ways, for example, as 1607824 + 8381025 = 1268^2 + 2895^2 .

It is a cyclic number.

It is not a de Polignac number, because 9988849 - 2⁵ = 9988817 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 9988849.

It is not an unprimeable number, because it can be changed into a prime (9988879) 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, 384174 + ... + 384199.

It is an arithmetic number, because the mean of its divisors is an integer number (2689309).

Almost surely, 2^9988849 is an apocalyptic number.

It is an amenable number.

9988849 is a deficient number, since it is larger than the sum of its proper divisors (768387).

9988849 is a wasteful number, since it uses less digits than its factorization.

9988849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 768386.

The product of its digits is 1492992, while the sum is 55.

The square root of 9988849 is about 3160.5140404687. The cubic root of 9988849 is about 215.3633588814.

The spelling of 9988849 in words is "nine million, nine hundred eighty-eight thousand, eight hundred forty-nine".