129117097 has 2 divisors, whose sum is σ = 129117098. Its totient is φ = 129117096.

The previous prime is 129117083. The next prime is 129117133. The reversal of 129117097 is 790711921.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 112763161 + 16353936 = 10619^2 + 4044^2 .

It is an emirp because it is prime and its reverse (790711921) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 129117097 - 2¹⁹ = 128592809 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (129117067) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64558548 + 64558549.

It is an arithmetic number, because the mean of its divisors is an integer number (64558549).

Almost surely, 2^129117097 is an apocalyptic number.

It is an amenable number.

129117097 is a deficient number, since it is larger than the sum of its proper divisors (1).

129117097 is an equidigital number, since it uses as much as digits as its factorization.

129117097 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7938, while the sum is 37.

The square root of 129117097 is about 11362.9704303056. The cubic root of 129117097 is about 505.4302734248.

The spelling of 129117097 in words is "one hundred twenty-nine million, one hundred seventeen thousand, ninety-seven".