129323933 has 2 divisors, whose sum is σ = 129323934. Its totient is φ = 129323932.

The previous prime is 129323927. The next prime is 129323959. The reversal of 129323933 is 339323921.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 102677689 + 26646244 = 10133^2 + 5162^2 .

It is a cyclic number.

It is not a de Polignac number, because 129323933 - 2¹⁶ = 129258397 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 129323893 and 129323902.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (129322933) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64661966 + 64661967.

It is an arithmetic number, because the mean of its divisors is an integer number (64661967).

Almost surely, 2^129323933 is an apocalyptic number.

It is an amenable number.

129323933 is a deficient number, since it is larger than the sum of its proper divisors (1).

129323933 is an equidigital number, since it uses as much as digits as its factorization.

129323933 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 26244, while the sum is 35.

The square root of 129323933 is about 11372.0681056701. The cubic root of 129323933 is about 505.7000166932.

The spelling of 129323933 in words is "one hundred twenty-nine million, three hundred twenty-three thousand, nine hundred thirty-three".