9899289 has 12 divisors (see below), whose sum is σ = 14327716. Its totient is φ = 6586272.

The previous prime is 9899273. The next prime is 9899291. The reversal of 9899289 is 9829989.

9899289 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 8311689 + 1587600 = 2883^2 + 1260^2 .

It is not a de Polignac number, because 9899289 - 2⁴ = 9899273 is a prime.

It is a Duffinian number.

It is a Curzon number.

9899289 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9899689) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6087 + ... + 7539.

Almost surely, 2^9899289 is an apocalyptic number.

It is an amenable number.

9899289 is a deficient number, since it is larger than the sum of its proper divisors (4428427).

9899289 is a wasteful number, since it uses less digits than its factorization.

9899289 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2216 (or 2213 counting only the distinct ones).

The product of its digits is 839808, while the sum is 54.

The square root of 9899289 is about 3146.3135571650. The cubic root of 9899289 is about 214.7177764423.

The spelling of 9899289 in words is "nine million, eight hundred ninety-nine thousand, two hundred eighty-nine".