129459959 has 2 divisors, whose sum is σ = 129459960. Its totient is φ = 129459958.

The previous prime is 129459923. The next prime is 129459989. The reversal of 129459959 is 959954921.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 129459959 - 2⁸ = 129459703 is a prime.

It is a Sophie Germain 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 129459959.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (129459989) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64729979 + 64729980.

It is an arithmetic number, because the mean of its divisors is an integer number (64729980).

Almost surely, 2^129459959 is an apocalyptic number.

129459959 is a deficient number, since it is larger than the sum of its proper divisors (1).

129459959 is an equidigital number, since it uses as much as digits as its factorization.

129459959 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1312200, while the sum is 53.

The square root of 129459959 is about 11378.0472401902. The cubic root of 129459959 is about 505.8772570158.

The spelling of 129459959 in words is "one hundred twenty-nine million, four hundred fifty-nine thousand, nine hundred fifty-nine".