9869899 has 4 divisors (see below), whose sum is σ = 10629136. Its totient is φ = 9110664.

The previous prime is 9869869. The next prime is 9869903. The reversal of 9869899 is 9989689.

9869899 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 is a cyclic number.

It is not a de Polignac number, because 9869899 - 2¹³ = 9861707 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9869869) 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, 379599 + ... + 379624.

It is an arithmetic number, because the mean of its divisors is an integer number (2657284).

Almost surely, 2^9869899 is an apocalyptic number.

9869899 is a deficient number, since it is larger than the sum of its proper divisors (759237).

9869899 is a wasteful number, since it uses less digits than its factorization.

9869899 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 759236.

The product of its digits is 2519424, while the sum is 58.

The square root of 9869899 is about 3141.6395401128. The cubic root of 9869899 is about 214.5050739305.

The spelling of 9869899 in words is "nine million, eight hundred sixty-nine thousand, eight hundred ninety-nine".