129334879 has 2 divisors, whose sum is σ = 129334880. Its totient is φ = 129334878.

The previous prime is 129334847. The next prime is 129334921. The reversal of 129334879 is 978433921.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 129334879 - 2⁵ = 129334847 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (129334379) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64667439 + 64667440.

It is an arithmetic number, because the mean of its divisors is an integer number (64667440).

Almost surely, 2^129334879 is an apocalyptic number.

129334879 is a deficient number, since it is larger than the sum of its proper divisors (1).

129334879 is an equidigital number, since it uses as much as digits as its factorization.

129334879 is an evil number, because the sum of its binary digits is even.

The product of its digits is 326592, while the sum is 46.

The square root of 129334879 is about 11372.5493623901. The cubic root of 129334879 is about 505.7142838029.

The spelling of 129334879 in words is "one hundred twenty-nine million, three hundred thirty-four thousand, eight hundred seventy-nine".