129791339 has 2 divisors, whose sum is σ = 129791340. Its totient is φ = 129791338.

The previous prime is 129791303. The next prime is 129791351. The reversal of 129791339 is 933197921.

It is a strong prime.

It is an emirp because it is prime and its reverse (933197921) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 129791339 - 2¹² = 129787243 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 129791339.

It is not a weakly prime, because it can be changed into another prime (129791399) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64895669 + 64895670.

It is an arithmetic number, because the mean of its divisors is an integer number (64895670).

Almost surely, 2^129791339 is an apocalyptic number.

129791339 is a deficient number, since it is larger than the sum of its proper divisors (1).

129791339 is an equidigital number, since it uses as much as digits as its factorization.

129791339 is an evil number, because the sum of its binary digits is even.

The product of its digits is 91854, while the sum is 44.

The square root of 129791339 is about 11392.6001860857. The cubic root of 129791339 is about 506.3085223409.

The spelling of 129791339 in words is "one hundred twenty-nine million, seven hundred ninety-one thousand, three hundred thirty-nine".