129260469 has 16 divisors (see below), whose sum is σ = 196523712. Its totient is φ = 74865408.

The previous prime is 129260447. The next prime is 129260479. The reversal of 129260469 is 964062921.

It is not a de Polignac number, because 129260469 - 2⁹ = 129259957 is a prime.

It is a super-2 number, since 2×129260469² = 33416537692199922, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129260429) 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 15 ways as a sum of consecutive naturals, for example, 96819 + ... + 98144.

It is an arithmetic number, because the mean of its divisors is an integer number (12282732).

Almost surely, 2^129260469 is an apocalyptic number.

It is an amenable number.

129260469 is a deficient number, since it is larger than the sum of its proper divisors (67263243).

129260469 is a wasteful number, since it uses less digits than its factorization.

129260469 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 194996.

The product of its (nonzero) digits is 46656, while the sum is 39.

The square root of 129260469 is about 11369.2774176726. The cubic root of 129260469 is about 505.6172813057.

The spelling of 129260469 in words is "one hundred twenty-nine million, two hundred sixty thousand, four hundred sixty-nine".