12189629 has 16 divisors (see below), whose sum is σ = 13390272. Its totient is φ = 11052288.

The previous prime is 12189623. The next prime is 12189631. The reversal of 12189629 is 92698121.

It is a cyclic number.

It is not a de Polignac number, because 12189629 - 2¹⁶ = 12124093 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 12189592 and 12189601.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12189623) 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 15 ways as a sum of consecutive naturals, for example, 74702 + ... + 74864.

It is an arithmetic number, because the mean of its divisors is an integer number (836892).

Almost surely, 2^12189629 is an apocalyptic number.

It is an amenable number.

12189629 is a deficient number, since it is larger than the sum of its proper divisors (1200643).

12189629 is a wasteful number, since it uses less digits than its factorization.

With its predecessor (12189628) it forms a Ruth-Aaron pair, since the sum of their distinct prime factors is the same (316).

12189629 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 316.

The product of its digits is 15552, while the sum is 38.

The square root of 12189629 is about 3491.3649193403. The cubic root of 12189629 is about 230.1425014839.

The spelling of 12189629 in words is "twelve million, one hundred eighty-nine thousand, six hundred twenty-nine".