129439319 has 8 divisors (see below), whose sum is σ = 131468832. Its totient is φ = 127415680.

The previous prime is 129439313. The next prime is 129439327. The reversal of 129439319 is 913934921.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-129439319 is a prime.

It is a super-2 number, since 2×129439319² = 33509074606367522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129439313) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 66707 + ... + 68619.

It is an arithmetic number, because the mean of its divisors is an integer number (16433604).

Almost surely, 2^129439319 is an apocalyptic number.

129439319 is a deficient number, since it is larger than the sum of its proper divisors (2029513).

129439319 is an equidigital number, since it uses as much as digits as its factorization.

129439319 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2937.

The product of its digits is 52488, while the sum is 41.

The square root of 129439319 is about 11377.1401942667. The cubic root of 129439319 is about 505.8503713244.

The spelling of 129439319 in words is "one hundred twenty-nine million, four hundred thirty-nine thousand, three hundred nineteen".