129369 has 8 divisors (see below), whose sum is σ = 178560. Its totient is φ = 83216.

The previous prime is 129361. The next prime is 129379. The reversal of 129369 is 963921.

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 129369 - 2³ = 129361 is a prime.

It is a super-2 number, since 2×129369² = 33472676322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (129361) 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, 657 + ... + 830.

It is an arithmetic number, because the mean of its divisors is an integer number (22320).

2¹²⁹³⁶⁹ is an apocalyptic number.

It is an amenable number.

129369 is a deficient number, since it is larger than the sum of its proper divisors (49191).

129369 is a wasteful number, since it uses less digits than its factorization.

129369 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1519.

The product of its digits is 2916, while the sum is 30.

The square root of 129369 is about 359.6790235752. The cubic root of 129369 is about 50.5758752240.

The spelling of 129369 in words is "one hundred twenty-nine thousand, three hundred sixty-nine".