9664129 has 2 divisors, whose sum is σ = 9664130. Its totient is φ = 9664128.

The previous prime is 9664097. The next prime is 9664153. The reversal of 9664129 is 9214669.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9641025 + 23104 = 3105^2 + 152^2 .

It is a cyclic number.

It is not a de Polignac number, because 9664129 - 2⁵ = 9664097 is a prime.

It is not a weakly prime, because it can be changed into another prime (9664429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4832064 + 4832065.

It is an arithmetic number, because the mean of its divisors is an integer number (4832065).

Almost surely, 2^9664129 is an apocalyptic number.

It is an amenable number.

9664129 is a deficient number, since it is larger than the sum of its proper divisors (1).

9664129 is an equidigital number, since it uses as much as digits as its factorization.

9664129 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 23328, while the sum is 37.

The square root of 9664129 is about 3108.7182246064. The cubic root of 9664129 is about 213.0039086178.

The spelling of 9664129 in words is "nine million, six hundred sixty-four thousand, one hundred twenty-nine".