9916813 has 2 divisors, whose sum is σ = 9916814.
Its totient is φ = 9916812.
The previous prime is 9916787. The next prime is 9916843. The reversal of 9916813 is 3186199.
9916813 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.
It is a weak prime.
It can be written as a sum of positive squares in only one way, i.e., 9815689 + 101124 = 3133^2 + 318^2
It is a cyclic number.
It is not a de Polignac number, because 9916813 - 213 = 9908621 is a prime.
9916813 is a lucky number.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (9916843) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4958406 + 4958407.
It is an arithmetic number, because the mean of its divisors is an integer number (4958407).
Almost surely, 29916813 is an apocalyptic number.
It is an amenable number.
9916813 is a deficient number, since it is larger than the sum of its proper divisors (1).
9916813 is an equidigital number, since it uses as much as digits as its factorization.
9916813 is an evil number, because the sum of its binary digits is even.
The product of its digits is 11664, while the sum is 37.
The square root of 9916813 is about 3149.0971722067.
The cubic root of 9916813 is about 214.8444015703.
The spelling of 9916813 in words is "nine million, nine hundred sixteen thousand, eight hundred thirteen".