129352197 has 8 divisors (see below), whose sum is σ = 185736544. Its totient is φ = 79601328.

The previous prime is 129352169. The next prime is 129352229. The reversal of 129352197 is 791253921.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 129352197 - 2⁸ = 129351941 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39), and also a Moran number because the ratio is a prime number: 3316723 = 129352197 / (1 + 2 + 9 + 3 + 5 + 2 + 1 + 9 + 7).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129352697) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1658323 + ... + 1658400.

It is an arithmetic number, because the mean of its divisors is an integer number (23217068).

Almost surely, 2^129352197 is an apocalyptic number.

It is an amenable number.

129352197 is a deficient number, since it is larger than the sum of its proper divisors (56384347).

129352197 is a wasteful number, since it uses less digits than its factorization.

129352197 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3316739.

The product of its digits is 34020, while the sum is 39.

The square root of 129352197 is about 11373.3107317087. The cubic root of 129352197 is about 505.7368545876.

The spelling of 129352197 in words is "one hundred twenty-nine million, three hundred fifty-two thousand, one hundred ninety-seven".