129927097 has 2 divisors, whose sum is σ = 129927098. Its totient is φ = 129927096.

The previous prime is 129927059. The next prime is 129927131. The reversal of 129927097 is 790729921.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 85451536 + 44475561 = 9244^2 + 6669^2 .

It is a cyclic number.

It is not a de Polignac number, because 129927097 - 2¹¹ = 129925049 is a prime.

It is not a weakly prime, because it can be changed into another prime (129927397) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64963548 + 64963549.

It is an arithmetic number, because the mean of its divisors is an integer number (64963549).

Almost surely, 2^129927097 is an apocalyptic number.

It is an amenable number.

129927097 is a deficient number, since it is larger than the sum of its proper divisors (1).

129927097 is an equidigital number, since it uses as much as digits as its factorization.

129927097 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 142884, while the sum is 46.

The square root of 129927097 is about 11398.5567946122. The cubic root of 129927097 is about 506.4849888697.

The spelling of 129927097 in words is "one hundred twenty-nine million, nine hundred twenty-seven thousand, ninety-seven".