129441479 has 2 divisors, whose sum is σ = 129441480. Its totient is φ = 129441478.

The previous prime is 129441467. The next prime is 129441527. The reversal of 129441479 is 974144921.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 129441479 - 2¹² = 129437383 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (129441419) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64720739 + 64720740.

It is an arithmetic number, because the mean of its divisors is an integer number (64720740).

Almost surely, 2^129441479 is an apocalyptic number.

129441479 is a deficient number, since it is larger than the sum of its proper divisors (1).

129441479 is an equidigital number, since it uses as much as digits as its factorization.

129441479 is an evil number, because the sum of its binary digits is even.

The product of its digits is 72576, while the sum is 41.

The square root of 129441479 is about 11377.2351210652. The cubic root of 129441479 is about 505.8531850772.

The spelling of 129441479 in words is "one hundred twenty-nine million, four hundred forty-one thousand, four hundred seventy-nine".