129079517 has 8 divisors (see below), whose sum is σ = 147630912. Its totient is φ = 110556000.

The previous prime is 129079513. The next prime is 129079523. The reversal of 129079517 is 715970921.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 129079517 - 2² = 129079513 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129079513) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4142 + ... + 16592.

It is an arithmetic number, because the mean of its divisors is an integer number (18453864).

Almost surely, 2^129079517 is an apocalyptic number.

It is an amenable number.

129079517 is a deficient number, since it is larger than the sum of its proper divisors (18551395).

129079517 is a wasteful number, since it uses less digits than its factorization.

129079517 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13939.

The product of its (nonzero) digits is 39690, while the sum is 41.

The square root of 129079517 is about 11361.3166930598. The cubic root of 129079517 is about 505.3812328945.

The spelling of 129079517 in words is "one hundred twenty-nine million, seventy-nine thousand, five hundred seventeen".