12289667 has 4 divisors (see below), whose sum is σ = 13235040. Its totient is φ = 11344296.

The previous prime is 12289639. The next prime is 12289679. The reversal of 12289667 is 76698221.

12289667 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 76698221 = 127 ⋅603923.

It is a cyclic number.

It is not a de Polignac number, because 12289667 - 2¹⁸ = 12027523 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12289687) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 472667 + ... + 472692.

It is an arithmetic number, because the mean of its divisors is an integer number (3308760).

Almost surely, 2^12289667 is an apocalyptic number.

12289667 is a deficient number, since it is larger than the sum of its proper divisors (945373).

12289667 is an equidigital number, since it uses as much as digits as its factorization.

12289667 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 945372.

The product of its digits is 72576, while the sum is 41.

The square root of 12289667 is about 3505.6621343193. The cubic root of 12289667 is about 230.7703658035.

The spelling of 12289667 in words is "twelve million, two hundred eighty-nine thousand, six hundred sixty-seven".