899990011111 has 4 divisors (see below), whose sum is σ = 913422697912. Its totient is φ = 886557324312.

The previous prime is 899990011091. The next prime is 899990011157. The reversal of 899990011111 is 111110099998.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-899990011111 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (899990011211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6716343300 + ... + 6716343433.

It is an arithmetic number, because the mean of its divisors is an integer number (228355674478).

Almost surely, 2^899990011111 is an apocalyptic number.

899990011111 is a deficient number, since it is larger than the sum of its proper divisors (13432686801).

899990011111 is a wasteful number, since it uses less digits than its factorization.

899990011111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13432686800.

The product of its (nonzero) digits is 52488, while the sum is 49.

The spelling of 899990011111 in words is "eight hundred ninety-nine billion, nine hundred ninety million, eleven thousand, one hundred eleven".