129641169 has 16 divisors (see below), whose sum is σ = 198557568. Its totient is φ = 73702272.

The previous prime is 129641159. The next prime is 129641189. The reversal of 129641169 is 961146921.

It is not a de Polignac number, because 129641169 - 2⁴ = 129641153 is a prime.

It is a super-2 number, since 2×129641169² = 33613665399373122, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (129641129) 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, 11532 + ... + 19805.

It is an arithmetic number, because the mean of its divisors is an integer number (12409848).

Almost surely, 2^129641169 is an apocalyptic number.

It is an amenable number.

129641169 is a deficient number, since it is larger than the sum of its proper divisors (68916399).

129641169 is a wasteful number, since it uses less digits than its factorization.

129641169 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31544.

The product of its digits is 23328, while the sum is 39.

The square root of 129641169 is about 11386.0075970465. The cubic root of 129641169 is about 506.1131788158.

The spelling of 129641169 in words is "one hundred twenty-nine million, six hundred forty-one thousand, one hundred sixty-nine".