12904169 has 2 divisors, whose sum is σ = 12904170. Its totient is φ = 12904168.

The previous prime is 12904141. The next prime is 12904181. The reversal of 12904169 is 96140921.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12334144 + 570025 = 3512^2 + 755^2 .

It is a cyclic number.

It is not a de Polignac number, because 12904169 - 2¹² = 12900073 is a prime.

It is a super-2 number, since 2×12904169² = 333035155161122, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (12904189) 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, 6452084 + 6452085.

It is an arithmetic number, because the mean of its divisors is an integer number (6452085).

Almost surely, 2^12904169 is an apocalyptic number.

It is an amenable number.

12904169 is a deficient number, since it is larger than the sum of its proper divisors (1).

12904169 is an equidigital number, since it uses as much as digits as its factorization.

12904169 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3888, while the sum is 32.

The square root of 12904169 is about 3592.2373251220. The cubic root of 12904169 is about 234.5542720616.

The spelling of 12904169 in words is "twelve million, nine hundred four thousand, one hundred sixty-nine".