9916129 has 2 divisors, whose sum is σ = 9916130. Its totient is φ = 9916128.

The previous prime is 9916103. The next prime is 9916139. The reversal of 9916129 is 9216199.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8133904 + 1782225 = 2852^2 + 1335^2 .

It is an emirp because it is prime and its reverse (9216199) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 9916129 - 2⁹ = 9915617 is a prime.

It is a super-2 number, since 2×9916129² = 196659228689282, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (9916139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4958064 + 4958065.

It is an arithmetic number, because the mean of its divisors is an integer number (4958065).

Almost surely, 2^9916129 is an apocalyptic number.

It is an amenable number.

9916129 is a deficient number, since it is larger than the sum of its proper divisors (1).

9916129 is an equidigital number, since it uses as much as digits as its factorization.

9916129 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8748, while the sum is 37.

The square root of 9916129 is about 3148.9885677785. The cubic root of 9916129 is about 214.8394619138.

The spelling of 9916129 in words is "nine million, nine hundred sixteen thousand, one hundred twenty-nine".