12289679 has 2 divisors, whose sum is σ = 12289680. Its totient is φ = 12289678.

The previous prime is 12289639. The next prime is 12289681. The reversal of 12289679 is 97698221.

It is a happy number.

12289679 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12289679 is a prime.

Together with 12289681, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12289639) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6144839 + 6144840.

It is an arithmetic number, because the mean of its divisors is an integer number (6144840).

Almost surely, 2^12289679 is an apocalyptic number.

12289679 is a deficient number, since it is larger than the sum of its proper divisors (1).

12289679 is an equidigital number, since it uses as much as digits as its factorization.

12289679 is an evil number, because the sum of its binary digits is even.

The product of its digits is 108864, while the sum is 44.

The square root of 12289679 is about 3505.6638458358. The cubic root of 12289679 is about 230.7704409139.

The spelling of 12289679 in words is "twelve million, two hundred eighty-nine thousand, six hundred seventy-nine".