9886813 has 2 divisors, whose sum is σ = 9886814. Its totient is φ = 9886812.

The previous prime is 9886801. The next prime is 9886817. The reversal of 9886813 is 3186889.

It is a happy number.

9886813 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9504889 + 381924 = 3083^2 + 618^2 .

It is a cyclic number.

It is not a de Polignac number, because 9886813 - 2⁹ = 9886301 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 9886813.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9886817) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4943406 + 4943407.

It is an arithmetic number, because the mean of its divisors is an integer number (4943407).

Almost surely, 2^9886813 is an apocalyptic number.

It is an amenable number.

9886813 is a deficient number, since it is larger than the sum of its proper divisors (1).

9886813 is an equidigital number, since it uses as much as digits as its factorization.

9886813 is an evil number, because the sum of its binary digits is even.

The product of its digits is 82944, while the sum is 43.

The square root of 9886813 is about 3144.3302943552. The cubic root of 9886813 is about 214.6275361186.

The spelling of 9886813 in words is "nine million, eight hundred eighty-six thousand, eight hundred thirteen".