129411097 has 2 divisors, whose sum is σ = 129411098. Its totient is φ = 129411096.

The previous prime is 129411059. The next prime is 129411127. The reversal of 129411097 is 790114921.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 66113161 + 63297936 = 8131^2 + 7956^2 .

It is an emirp because it is prime and its reverse (790114921) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-129411097 is a prime.

It is not a weakly prime, because it can be changed into another prime (129411017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64705548 + 64705549.

It is an arithmetic number, because the mean of its divisors is an integer number (64705549).

Almost surely, 2^129411097 is an apocalyptic number.

It is an amenable number.

129411097 is a deficient number, since it is larger than the sum of its proper divisors (1).

129411097 is an equidigital number, since it uses as much as digits as its factorization.

129411097 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4536, while the sum is 34.

The square root of 129411097 is about 11375.8998325407. The cubic root of 129411097 is about 505.8136046836.

The spelling of 129411097 in words is "one hundred twenty-nine million, four hundred eleven thousand, ninety-seven".