129759139 has 8 divisors (see below), whose sum is σ = 132857568. Its totient is φ = 126692160.

The previous prime is 129759121. The next prime is 129759163. The reversal of 129759139 is 931957921.

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 129759139 - 2⁹ = 129758627 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (129759109) 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, 594 + ... + 16120.

It is an arithmetic number, because the mean of its divisors is an integer number (16607196).

Almost surely, 2^129759139 is an apocalyptic number.

129759139 is a deficient number, since it is larger than the sum of its proper divisors (3098429).

129759139 is a wasteful number, since it uses less digits than its factorization.

129759139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15725.

The product of its digits is 153090, while the sum is 46.

The square root of 129759139 is about 11391.1869004068. The cubic root of 129759139 is about 506.2666487641.

The spelling of 129759139 in words is "one hundred twenty-nine million, seven hundred fifty-nine thousand, one hundred thirty-nine".