129829 has 8 divisors (see below), whose sum is σ = 157248. Its totient is φ = 104640.

The previous prime is 129803. The next prime is 129841. The reversal of 129829 is 928921.

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 129829 - 2¹¹ = 127781 is a prime.

129829 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 129829.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 427 + ... + 664.

It is an arithmetic number, because the mean of its divisors is an integer number (19656).

2¹²⁹⁸²⁹ is an apocalyptic number.

It is an amenable number.

129829 is a deficient number, since it is larger than the sum of its proper divisors (27419).

129829 is a wasteful number, since it uses less digits than its factorization.

129829 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1115.

The product of its digits is 2592, while the sum is 31.

The square root of 129829 is about 360.3179151805. The cubic root of 129829 is about 50.6357488734.

The spelling of 129829 in words is "one hundred twenty-nine thousand, eight hundred twenty-nine".