129984097 has 2 divisors, whose sum is σ = 129984098. Its totient is φ = 129984096.

The previous prime is 129984089. The next prime is 129984103. The reversal of 129984097 is 790489921.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 129982801 + 1296 = 11401^2 + 36^2 .

It is a cyclic number.

It is not a de Polignac number, because 129984097 - 2³ = 129984089 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 129984097.

It is not a weakly prime, because it can be changed into another prime (129984047) 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, 64992048 + 64992049.

It is an arithmetic number, because the mean of its divisors is an integer number (64992049).

Almost surely, 2^129984097 is an apocalyptic number.

It is an amenable number.

129984097 is a deficient number, since it is larger than the sum of its proper divisors (1).

129984097 is an equidigital number, since it uses as much as digits as its factorization.

129984097 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 326592, while the sum is 49.

The square root of 129984097 is about 11401.0568369779. The cubic root of 129984097 is about 506.5590443062.

The spelling of 129984097 in words is "one hundred twenty-nine million, nine hundred eighty-four thousand, ninety-seven".