12167009 has 2 divisors, whose sum is σ = 12167010. Its totient is φ = 12167008.

The previous prime is 12166997. The next prime is 12167017. The reversal of 12167009 is 90076121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12054784 + 112225 = 3472^2 + 335^2 .

It is a cyclic number.

It is not a de Polignac number, because 12167009 - 2²⁰ = 11118433 is a prime.

It is a super-2 number, since 2×12167009² = 296072216012162, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (12167509) 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, 6083504 + 6083505.

It is an arithmetic number, because the mean of its divisors is an integer number (6083505).

Almost surely, 2^12167009 is an apocalyptic number.

It is an amenable number.

12167009 is a deficient number, since it is larger than the sum of its proper divisors (1).

12167009 is an equidigital number, since it uses as much as digits as its factorization.

12167009 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 756, while the sum is 26.

The square root of 12167009 is about 3488.1239943557. The cubic root of 12167009 is about 230.0000567108. Note that the first 4 decimals are identical.

The spelling of 12167009 in words is "twelve million, one hundred sixty-seven thousand, nine".