9816913 has 4 divisors (see below), whose sum is σ = 9977908. Its totient is φ = 9655920.

The previous prime is 9816899. The next prime is 9816923. The reversal of 9816913 is 3196189.

9816913 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in 2 ways, for example, as 1937664 + 7879249 = 1392^2 + 2807^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9816913 is a prime.

It is a Duffinian number.

9816913 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (9816923) 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, 80406 + ... + 80527.

It is an arithmetic number, because the mean of its divisors is an integer number (2494477).

Almost surely, 2^9816913 is an apocalyptic number.

It is an amenable number.

9816913 is a deficient number, since it is larger than the sum of its proper divisors (160995).

9816913 is a wasteful number, since it uses less digits than its factorization.

9816913 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160994.

The product of its digits is 11664, while the sum is 37.

The square root of 9816913 is about 3133.1953338405. The cubic root of 9816913 is about 214.1205321518.

The spelling of 9816913 in words is "nine million, eight hundred sixteen thousand, nine hundred thirteen".