129791963 has 16 divisors (see below), whose sum is σ = 150854400. Its totient is φ = 109376736.

The previous prime is 129791953. The next prime is 129791989. The reversal of 129791963 is 369197921.

It is not a de Polignac number, because 129791963 - 2¹⁰ = 129790939 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (129791953) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 111020 + ... + 112182.

It is an arithmetic number, because the mean of its divisors is an integer number (9428400).

Almost surely, 2^129791963 is an apocalyptic number.

129791963 is a deficient number, since it is larger than the sum of its proper divisors (21062437).

129791963 is a wasteful number, since it uses less digits than its factorization.

129791963 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1426.

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

The square root of 129791963 is about 11392.6275722504. The cubic root of 129791963 is about 506.3093337356.

The spelling of 129791963 in words is "one hundred twenty-nine million, seven hundred ninety-one thousand, nine hundred sixty-three".