9898209 has 12 divisors (see below), whose sum is σ = 14337700. Its totient is φ = 6580224.

The previous prime is 9898177. The next prime is 9898223. The reversal of 9898209 is 9028989.

9898209 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 4422609 + 5475600 = 2103^2 + 2340^2 .

It is not a de Polignac number, because 9898209 - 2⁵ = 9898177 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9898279) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2337 + ... + 5025.

Almost surely, 2^9898209 is an apocalyptic number.

It is an amenable number.

9898209 is a deficient number, since it is larger than the sum of its proper divisors (4439491).

9898209 is a wasteful number, since it uses less digits than its factorization.

9898209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3104 (or 3101 counting only the distinct ones).

The product of its (nonzero) digits is 93312, while the sum is 45.

The square root of 9898209 is about 3146.1419230543. The cubic root of 9898209 is about 214.7099676784.

The spelling of 9898209 in words is "nine million, eight hundred ninety-eight thousand, two hundred nine".