129882997 has 2 divisors, whose sum is σ = 129882998. Its totient is φ = 129882996.

The previous prime is 129882989. The next prime is 129883003. The reversal of 129882997 is 799288921.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 117202276 + 12680721 = 10826^2 + 3561^2 .

It is a cyclic number.

It is not a de Polignac number, because 129882997 - 2³ = 129882989 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (129882497) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64941498 + 64941499.

It is an arithmetic number, because the mean of its divisors is an integer number (64941499).

Almost surely, 2^129882997 is an apocalyptic number.

It is an amenable number.

129882997 is a deficient number, since it is larger than the sum of its proper divisors (1).

129882997 is an equidigital number, since it uses as much as digits as its factorization.

129882997 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1306368, while the sum is 55.

The square root of 129882997 is about 11396.6221750131. The cubic root of 129882997 is about 506.4276784854.

The spelling of 129882997 in words is "one hundred twenty-nine million, eight hundred eighty-two thousand, nine hundred ninety-seven".