12129469 has 4 divisors (see below), whose sum is σ = 13232160. Its totient is φ = 11026780.

The previous prime is 12129419. The next prime is 12129473. The reversal of 12129469 is 96492121.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 96492121 = 11 ⋅8772011.

It is a cyclic number.

It is not a de Polignac number, because 12129469 - 2⁹ = 12128957 is a prime.

It is a super-2 number, since 2×12129469² = 294248036443922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12129419) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 551329 + ... + 551350.

It is an arithmetic number, because the mean of its divisors is an integer number (3308040).

Almost surely, 2^12129469 is an apocalyptic number.

It is an amenable number.

12129469 is a deficient number, since it is larger than the sum of its proper divisors (1102691).

12129469 is a wasteful number, since it uses less digits than its factorization.

12129469 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1102690.

The product of its digits is 7776, while the sum is 34.

The square root of 12129469 is about 3482.7387211791. The cubic root of 12129469 is about 229.7632661857.

The spelling of 12129469 in words is "twelve million, one hundred twenty-nine thousand, four hundred sixty-nine".