129716801 has 2 divisors, whose sum is σ = 129716802. Its totient is φ = 129716800.

The previous prime is 129716789. The next prime is 129716809. The reversal of 129716801 is 108617921.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 110145025 + 19571776 = 10495^2 + 4424^2 .

It is a cyclic number.

It is not a de Polignac number, because 129716801 - 2⁶ = 129716737 is a prime.

It is not a weakly prime, because it can be changed into another prime (129716809) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64858400 + 64858401.

It is an arithmetic number, because the mean of its divisors is an integer number (64858401).

Almost surely, 2^129716801 is an apocalyptic number.

It is an amenable number.

129716801 is a deficient number, since it is larger than the sum of its proper divisors (1).

129716801 is an equidigital number, since it uses as much as digits as its factorization.

129716801 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6048, while the sum is 35.

The square root of 129716801 is about 11389.3283823060. The cubic root of 129716801 is about 506.2115809690.

The spelling of 129716801 in words is "one hundred twenty-nine million, seven hundred sixteen thousand, eight hundred one".