12935509 has 4 divisors (see below), whose sum is σ = 12942720. Its totient is φ = 12928300.

The previous prime is 12935501. The next prime is 12935519. The reversal of 12935509 is 90553921.

It is a happy number.

12935509 is digitally balanced in base 3, because in such base 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 a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 12935509 - 2³ = 12935501 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 (12935501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1434 + ... + 5284.

It is an arithmetic number, because the mean of its divisors is an integer number (3235680).

Almost surely, 2^12935509 is an apocalyptic number.

It is an amenable number.

12935509 is a deficient number, since it is larger than the sum of its proper divisors (7211).

12935509 is an equidigital number, since it uses as much as digits as its factorization.

12935509 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7210.

The product of its (nonzero) digits is 12150, while the sum is 34.

The square root of 12935509 is about 3596.5968637032. The cubic root of 12935509 is about 234.7440037135.

The spelling of 12935509 in words is "twelve million, nine hundred thirty-five thousand, five hundred nine".