9855913 has 2 divisors, whose sum is σ = 9855914. Its totient is φ = 9855912.

The previous prime is 9855887. The next prime is 9855929. The reversal of 9855913 is 3195589.

9855913 is digitally balanced in base 2, 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., 9659664 + 196249 = 3108^2 + 443^2 .

It is an emirp because it is prime and its reverse (3195589) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 9855913 - 2⁹ = 9855401 is a prime.

It is not a weakly prime, because it can be changed into another prime (9855943) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4927956 + 4927957.

It is an arithmetic number, because the mean of its divisors is an integer number (4927957).

Almost surely, 2^9855913 is an apocalyptic number.

It is an amenable number.

9855913 is a deficient number, since it is larger than the sum of its proper divisors (1).

9855913 is an equidigital number, since it uses as much as digits as its factorization.

9855913 is an evil number, because the sum of its binary digits is even.

The product of its digits is 48600, while the sum is 40.

The square root of 9855913 is about 3139.4128431922. The cubic root of 9855913 is about 214.4037055798.

The spelling of 9855913 in words is "nine million, eight hundred fifty-five thousand, nine hundred thirteen".