12078569 has 2 divisors, whose sum is σ = 12078570. Its totient is φ = 12078568.

The previous prime is 12078533. The next prime is 12078581. The reversal of 12078569 is 96587021.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7772944 + 4305625 = 2788^2 + 2075^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12078569 is a prime.

It is a super-2 number, since 2×12078569² = 291783658175522, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (12078769) 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, 6039284 + 6039285.

It is an arithmetic number, because the mean of its divisors is an integer number (6039285).

Almost surely, 2^12078569 is an apocalyptic number.

It is an amenable number.

12078569 is a deficient number, since it is larger than the sum of its proper divisors (1).

12078569 is an equidigital number, since it uses as much as digits as its factorization.

12078569 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 30240, while the sum is 38.

The square root of 12078569 is about 3475.4235713075. The cubic root of 12078569 is about 229.4414233703.

The spelling of 12078569 in words is "twelve million, seventy-eight thousand, five hundred sixty-nine".