129984044089 has 9 divisors (see below), whose sum is σ = 130485304677. Its totient is φ = 129484705884.

The previous prime is 129984044083. The next prime is 129984044119. The reversal of 129984044089 is 980440489921.

The square root of 129984044089 is 360533.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 129984044089 - 2⁹ = 129984043577 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (129984044083) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 125104432 + ... + 125105470.

Almost surely, 2^129984044089 is an apocalyptic number.

129984044089 is the 360533-rd square number.

129984044089 is the 180267-th centered octagonal number.

It is an amenable number.

129984044089 is a deficient number, since it is larger than the sum of its proper divisors (501260588).

129984044089 is an frugal number, since it uses more digits than its factorization.

129984044089 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2772 (or 1386 counting only the distinct ones).

The product of its (nonzero) digits is 5971968, while the sum is 58.

The spelling of 129984044089 in words is "one hundred twenty-nine billion, nine hundred eighty-four million, forty-four thousand, eighty-nine".