129793797 has 18 divisors (see below), whose sum is σ = 218089638. Its totient is φ = 74167632.

The previous prime is 129793789. The next prime is 129793847. The reversal of 129793797 is 797397921.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 93721761 + 36072036 = 9681^2 + 6006^2 .

It is not a de Polignac number, because 129793797 - 2³ = 129793789 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129793717) 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 17 ways as a sum of consecutive naturals, for example, 146718 + ... + 147599.

It is an arithmetic number, because the mean of its divisors is an integer number (12116091).

Almost surely, 2^129793797 is an apocalyptic number.

It is an amenable number.

129793797 is a deficient number, since it is larger than the sum of its proper divisors (88295841).

129793797 is a wasteful number, since it uses less digits than its factorization.

129793797 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 294337 (or 294327 counting only the distinct ones).

The product of its digits is 1500282, while the sum is 54.

The square root of 129793797 is about 11392.7080626162. The cubic root of 129793797 is about 506.3117184928.

The spelling of 129793797 in words is "one hundred twenty-nine million, seven hundred ninety-three thousand, seven hundred ninety-seven".