12909559 has 8 divisors (see below), whose sum is σ = 14278880. Its totient is φ = 11594016.

The previous prime is 12909557. The next prime is 12909583. The reversal of 12909559 is 95590921.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12909559 - 2¹ = 12909557 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12909551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12939 + ... + 13900.

It is an arithmetic number, because the mean of its divisors is an integer number (1784860).

Almost surely, 2^12909559 is an apocalyptic number.

12909559 is a deficient number, since it is larger than the sum of its proper divisors (1369321).

12909559 is a wasteful number, since it uses less digits than its factorization.

12909559 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26889.

The product of its (nonzero) digits is 36450, while the sum is 40.

The square root of 12909559 is about 3592.9874756253. The cubic root of 12909559 is about 234.5869248564.

The spelling of 12909559 in words is "twelve million, nine hundred nine thousand, five hundred fifty-nine".