129790079 has 8 divisors (see below), whose sum is σ = 130656240. Its totient is φ = 128927296.

The previous prime is 129790061. The next prime is 129790091. The reversal of 129790079 is 970097921.

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-129790079 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129790099) 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, 151019 + ... + 151875.

It is an arithmetic number, because the mean of its divisors is an integer number (16332030).

Almost surely, 2^129790079 is an apocalyptic number.

129790079 is a deficient number, since it is larger than the sum of its proper divisors (866161).

129790079 is an equidigital number, since it uses as much as digits as its factorization.

129790079 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1689.

The product of its (nonzero) digits is 71442, while the sum is 44.

The square root of 129790079 is about 11392.5448868986. The cubic root of 129790079 is about 506.3068839398.

The spelling of 129790079 in words is "one hundred twenty-nine million, seven hundred ninety thousand, seventy-nine".