9986161 has 2 divisors, whose sum is σ = 9986162. Its totient is φ = 9986160.

The previous prime is 9986113. The next prime is 9986183. The reversal of 9986161 is 1616899.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5035536 + 4950625 = 2244^2 + 2225^2 .

It is an emirp because it is prime and its reverse (1616899) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 9986161 - 2⁷ = 9986033 is a prime.

It is not a weakly prime, because it can be changed into another prime (9986111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4993080 + 4993081.

It is an arithmetic number, because the mean of its divisors is an integer number (4993081).

Almost surely, 2^9986161 is an apocalyptic number.

It is an amenable number.

9986161 is a deficient number, since it is larger than the sum of its proper divisors (1).

9986161 is an equidigital number, since it uses as much as digits as its factorization.

9986161 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 23328, while the sum is 40.

The square root of 9986161 is about 3160.0887645761. The cubic root of 9986161 is about 215.3440390498.

The spelling of 9986161 in words is "nine million, nine hundred eighty-six thousand, one hundred sixty-one".