12635459 has 2 divisors, whose sum is σ = 12635460. Its totient is φ = 12635458.

The previous prime is 12635453. The next prime is 12635461. The reversal of 12635459 is 95453621.

It is a strong prime.

It is an emirp because it is prime and its reverse (95453621) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12635459 is a prime.

Together with 12635461, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (12635453) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6317729 + 6317730.

It is an arithmetic number, because the mean of its divisors is an integer number (6317730).

Almost surely, 2^12635459 is an apocalyptic number.

12635459 is a deficient number, since it is larger than the sum of its proper divisors (1).

12635459 is an equidigital number, since it uses as much as digits as its factorization.

12635459 is an evil number, because the sum of its binary digits is even.

The product of its digits is 32400, while the sum is 35.

The square root of 12635459 is about 3554.6390815384. The cubic root of 12635459 is about 232.9147581865.

The spelling of 12635459 in words is "twelve million, six hundred thirty-five thousand, four hundred fifty-nine".