12209479 has 2 divisors, whose sum is σ = 12209480. Its totient is φ = 12209478.

The previous prime is 12209471. The next prime is 12209501. The reversal of 12209479 is 97490221.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12209479 - 2³ = 12209471 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12209471) 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, 6104739 + 6104740.

It is an arithmetic number, because the mean of its divisors is an integer number (6104740).

Almost surely, 2^12209479 is an apocalyptic number.

12209479 is a deficient number, since it is larger than the sum of its proper divisors (1).

12209479 is an equidigital number, since it uses as much as digits as its factorization.

12209479 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9072, while the sum is 34.

The square root of 12209479 is about 3494.2064907501. The cubic root of 12209479 is about 230.2673576535.

The spelling of 12209479 in words is "twelve million, two hundred nine thousand, four hundred seventy-nine".