129904811 has 2 divisors, whose sum is σ = 129904812. Its totient is φ = 129904810.

The previous prime is 129904793. The next prime is 129904829. The reversal of 129904811 is 118409921.

It is a balanced prime because it is at equal distance from previous prime (129904793) and next prime (129904829).

It is a cyclic number.

It is not a de Polignac number, because 129904811 - 2²⁶ = 62795947 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (129904111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64952405 + 64952406.

It is an arithmetic number, because the mean of its divisors is an integer number (64952406).

Almost surely, 2^129904811 is an apocalyptic number.

129904811 is a deficient number, since it is larger than the sum of its proper divisors (1).

129904811 is an equidigital number, since it uses as much as digits as its factorization.

129904811 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5184, while the sum is 35.

The square root of 129904811 is about 11397.5791727893. The cubic root of 129904811 is about 506.4560286037.

The spelling of 129904811 in words is "one hundred twenty-nine million, nine hundred four thousand, eight hundred eleven".