129011189 has 8 divisors (see below), whose sum is σ = 131564160. Its totient is φ = 126478800.

The previous prime is 129011177. The next prime is 129011213. The reversal of 129011189 is 981110921.

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

It is a cyclic number.

It is not a de Polignac number, because 129011189 - 2¹⁶ = 128945653 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129013189) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7832 + ... + 17870.

It is an arithmetic number, because the mean of its divisors is an integer number (16445520).

Almost surely, 2^129011189 is an apocalyptic number.

It is an amenable number.

129011189 is a deficient number, since it is larger than the sum of its proper divisors (2552971).

129011189 is a wasteful number, since it uses less digits than its factorization.

129011189 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10291.

The product of its (nonzero) digits is 1296, while the sum is 32.

The square root of 129011189 is about 11358.3092491797. The cubic root of 129011189 is about 505.2920429528.

The spelling of 129011189 in words is "one hundred twenty-nine million, eleven thousand, one hundred eighty-nine".