129473339 has 2 divisors, whose sum is σ = 129473340. Its totient is φ = 129473338.

The previous prime is 129473327. The next prime is 129473341. The reversal of 129473339 is 933374921.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 129473339 - 2²⁰ = 128424763 is a prime.

Together with 129473341, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 129473296 and 129473305.

It is not a weakly prime, because it can be changed into another prime (129473359) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64736669 + 64736670.

It is an arithmetic number, because the mean of its divisors is an integer number (64736670).

Almost surely, 2^129473339 is an apocalyptic number.

129473339 is a deficient number, since it is larger than the sum of its proper divisors (1).

129473339 is an equidigital number, since it uses as much as digits as its factorization.

129473339 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 122472, while the sum is 41.

The square root of 129473339 is about 11378.6351993550. The cubic root of 129473339 is about 505.8946842950.

The spelling of 129473339 in words is "one hundred twenty-nine million, four hundred seventy-three thousand, three hundred thirty-nine".