9911689 has 16 divisors (see below), whose sum is σ = 10824192. Its totient is φ = 9051328.

The previous prime is 9911683. The next prime is 9911701. The reversal of 9911689 is 9861199.

It is a de Polignac number, because none of the positive numbers 2^k-9911689 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 (9911683) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 57207 + ... + 57379.

It is an arithmetic number, because the mean of its divisors is an integer number (676512).

Almost surely, 2^9911689 is an apocalyptic number.

It is an amenable number.

9911689 is a deficient number, since it is larger than the sum of its proper divisors (912503).

9911689 is a wasteful number, since it uses less digits than its factorization.

9911689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 296.

The product of its digits is 34992, while the sum is 43.

The square root of 9911689 is about 3148.2835005761. The cubic root of 9911689 is about 214.8073919526.

The spelling of 9911689 in words is "nine million, nine hundred eleven thousand, six hundred eighty-nine".