129197963 has 4 divisors (see below), whose sum is σ = 129272208. Its totient is φ = 129123720.

The previous prime is 129197951. The next prime is 129197993. The reversal of 129197963 is 369791921.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 129197963 - 2¹⁴ = 129181579 is a prime.

It is a super-2 number, since 2×129197963² = 33384227286698738, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (129197933) 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 3 ways as a sum of consecutive naturals, for example, 34448 + ... + 38013.

It is an arithmetic number, because the mean of its divisors is an integer number (32318052).

Almost surely, 2^129197963 is an apocalyptic number.

129197963 is a deficient number, since it is larger than the sum of its proper divisors (74245).

129197963 is an equidigital number, since it uses as much as digits as its factorization.

129197963 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74244.

The product of its digits is 183708, while the sum is 47.

The square root of 129197963 is about 11366.5281858622. The cubic root of 129197963 is about 505.5357683481.

The spelling of 129197963 in words is "one hundred twenty-nine million, one hundred ninety-seven thousand, nine hundred sixty-three".