9999000869 has 32 divisors (see below), whose sum is σ = 11968145280. Its totient is φ = 8233401600.

The previous prime is 9999000859. The next prime is 9999000901. The reversal of 9999000869 is 9680009999.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9999000869 is a prime.

It is a super-2 number, since 2×9999000869² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (59).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9999000859) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8951099 + ... + 8952215.

It is an arithmetic number, because the mean of its divisors is an integer number (374004540).

Almost surely, 2^9999000869 is an apocalyptic number.

It is an amenable number.

9999000869 is a deficient number, since it is larger than the sum of its proper divisors (1969144411).

9999000869 is a wasteful number, since it uses less digits than its factorization.

9999000869 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2261.

The product of its (nonzero) digits is 2834352, while the sum is 59.

The square root of 9999000869 is about 99995.0042202109. The cubic root of 9999000869 is about 2154.3629355592.

The spelling of 9999000869 in words is "nine billion, nine hundred ninety-nine million, eight hundred sixty-nine", and thus it is an aban number.