12169429 has 2 divisors, whose sum is σ = 12169430. Its totient is φ = 12169428.

The previous prime is 12169403. The next prime is 12169459. The reversal of 12169429 is 92496121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11492100 + 677329 = 3390^2 + 823^2 .

It is a cyclic number.

It is not a de Polignac number, because 12169429 - 2⁹ = 12168917 is a prime.

It is a plaindrome in base 14.

It is a junction number, because it is equal to n+sod(n) for n = 12169394 and 12169403.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12169459) 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 as a sum of consecutive naturals, namely, 6084714 + 6084715.

It is an arithmetic number, because the mean of its divisors is an integer number (6084715).

Almost surely, 2^12169429 is an apocalyptic number.

It is an amenable number.

12169429 is a deficient number, since it is larger than the sum of its proper divisors (1).

12169429 is an equidigital number, since it uses as much as digits as its factorization.

12169429 is an odious number, because the sum of its binary digits is odd.

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

The square root of 12169429 is about 3488.4708684465. The cubic root of 12169429 is about 230.0153045896.

The spelling of 12169429 in words is "twelve million, one hundred sixty-nine thousand, four hundred twenty-nine".