129599039 has 8 divisors (see below), whose sum is σ = 130609920. Its totient is φ = 128592000.

The previous prime is 129598969. The next prime is 129599051. The reversal of 129599039 is 930995921.

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-129599039 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 129598984 and 129599002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129599839) 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, 114227 + ... + 115355.

It is an arithmetic number, because the mean of its divisors is an integer number (16326240).

Almost surely, 2^129599039 is an apocalyptic number.

129599039 is a deficient number, since it is larger than the sum of its proper divisors (1010881).

129599039 is a wasteful number, since it uses less digits than its factorization.

129599039 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1921.

The product of its (nonzero) digits is 196830, while the sum is 47.

The square root of 129599039 is about 11384.1573689053. The cubic root of 129599039 is about 506.0583483465.

The spelling of 129599039 in words is "one hundred twenty-nine million, five hundred ninety-nine thousand, thirty-nine".