129859 has 8 divisors (see below), whose sum is σ = 138240. Its totient is φ = 121800.

The previous prime is 129853. The next prime is 129887. The reversal of 129859 is 958921.

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 129859 - 2⁹ = 129347 is a prime.

It is a cake number, because a cake can be divided into 129859 parts by 92 planar cuts.

It is a Duffinian number.

129859 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129853) 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, 1794 + ... + 1864.

It is an arithmetic number, because the mean of its divisors is an integer number (17280).

2¹²⁹⁸⁵⁹ is an apocalyptic number.

129859 is a deficient number, since it is larger than the sum of its proper divisors (8381).

129859 is an equidigital number, since it uses as much as digits as its factorization.

129859 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161.

The product of its digits is 6480, while the sum is 34.

The square root of 129859 is about 360.3595426793. The cubic root of 129859 is about 50.6396487609.

The spelling of 129859 in words is "one hundred twenty-nine thousand, eight hundred fifty-nine".