129349517 has 12 divisors (see below), whose sum is σ = 142287936. Its totient is φ = 116614920.

The previous prime is 129349513. The next prime is 129349523. The reversal of 129349517 is 715943921.

It is not a de Polignac number, because 129349517 - 2² = 129349513 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 (129349513) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 352268 + ... + 352634.

It is an arithmetic number, because the mean of its divisors is an integer number (11857328).

Almost surely, 2^129349517 is an apocalyptic number.

It is an amenable number.

129349517 is a deficient number, since it is larger than the sum of its proper divisors (12938419).

129349517 is an equidigital number, since it uses as much as digits as its factorization.

129349517 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 736 (or 557 counting only the distinct ones).

The product of its digits is 68040, while the sum is 41.

The square root of 129349517 is about 11373.1929114036. The cubic root of 129349517 is about 505.7333618389.

The spelling of 129349517 in words is "one hundred twenty-nine million, three hundred forty-nine thousand, five hundred seventeen".