9916689 has 8 divisors (see below), whose sum is σ = 13918240. Its totient is φ = 6263136.

The previous prime is 9916681. The next prime is 9916691. The reversal of 9916689 is 9866199.

9916689 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 9916689 - 2³ = 9916681 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (9916681) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 86932 + ... + 87045.

It is an arithmetic number, because the mean of its divisors is an integer number (1739780).

Almost surely, 2^9916689 is an apocalyptic number.

It is an amenable number.

9916689 is a deficient number, since it is larger than the sum of its proper divisors (4001551).

9916689 is a wasteful number, since it uses less digits than its factorization.

9916689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 173999.

The product of its digits is 209952, while the sum is 48.

The square root of 9916689 is about 3149.0774839626. The cubic root of 9916689 is about 214.8435060938.

The spelling of 9916689 in words is "nine million, nine hundred sixteen thousand, six hundred eighty-nine".