9899990011 has 4 divisors (see below), whose sum is σ = 10141453224. Its totient is φ = 9658526800.

The previous prime is 9899989999. The next prime is 9899990017. The reversal of 9899990011 is 1100999989.

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 9899990011 - 2²³ = 9891601403 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9899990017) 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, 120731545 + ... + 120731626.

It is an arithmetic number, because the mean of its divisors is an integer number (2535363306).

Almost surely, 2^9899990011 is an apocalyptic number.

9899990011 is a deficient number, since it is larger than the sum of its proper divisors (241463213).

9899990011 is a wasteful number, since it uses less digits than its factorization.

9899990011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 241463212.

The product of its (nonzero) digits is 472392, while the sum is 55.

The square root of 9899990011 is about 99498.6935140357. The cubic root of 9899990011 is about 2147.2284468412.

The spelling of 9899990011 in words is "nine billion, eight hundred ninety-nine million, nine hundred ninety thousand, eleven".