129079609 has 8 divisors (see below), whose sum is σ = 133848000. Its totient is φ = 124332432.

The previous prime is 129079553. The next prime is 129079631. The reversal of 129079609 is 906970921.

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 129079609 - 2¹¹ = 129077561 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (129079649) 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, 7662 + ... + 17800.

It is an arithmetic number, because the mean of its divisors is an integer number (16731000).

Almost surely, 2^129079609 is an apocalyptic number.

It is an amenable number.

129079609 is a deficient number, since it is larger than the sum of its proper divisors (4768391).

129079609 is a wasteful number, since it uses less digits than its factorization.

129079609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10607.

The product of its (nonzero) digits is 61236, while the sum is 43.

The square root of 129079609 is about 11361.3207418856. The cubic root of 129079609 is about 505.3813529627.

The spelling of 129079609 in words is "one hundred twenty-nine million, seventy-nine thousand, six hundred nine".