129032839 has 8 divisors (see below), whose sum is σ = 147132720. Its totient is φ = 112100736.

The previous prime is 129032831. The next prime is 129032903. The reversal of 129032839 is 938230921.

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 129032839 - 2³ = 129032831 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 129032798 and 129032807.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129032831) 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, 291709 + ... + 292150.

It is an arithmetic number, because the mean of its divisors is an integer number (18391590).

Almost surely, 2^129032839 is an apocalyptic number.

129032839 is a deficient number, since it is larger than the sum of its proper divisors (18099881).

129032839 is a wasteful number, since it uses less digits than its factorization.

129032839 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 583889.

The product of its (nonzero) digits is 23328, while the sum is 37.

The square root of 129032839 is about 11359.2622559742. The cubic root of 129032839 is about 505.3203065500.

The spelling of 129032839 in words is "one hundred twenty-nine million, thirty-two thousand, eight hundred thirty-nine".