9916559 has 12 divisors (see below), whose sum is σ = 10867392. Its totient is φ = 9017280.

The previous prime is 9916553. The next prime is 9916561. The reversal of 9916559 is 9556199.

9916559 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a de Polignac number, because none of the positive numbers 2^k-9916559 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 (9916553) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 16034 + ... + 16640.

It is an arithmetic number, because the mean of its divisors is an integer number (905616).

Almost surely, 2^9916559 is an apocalyptic number.

9916559 is a deficient number, since it is larger than the sum of its proper divisors (950833).

9916559 is a wasteful number, since it uses less digits than its factorization.

9916559 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 686 (or 655 counting only the distinct ones).

The product of its digits is 109350, while the sum is 44.

The square root of 9916559 is about 3149.0568429293. The cubic root of 9916559 is about 214.8425672799.

The spelling of 9916559 in words is "nine million, nine hundred sixteen thousand, five hundred fifty-nine".