12910609 has 4 divisors (see below), whose sum is σ = 12919360. Its totient is φ = 12901860.

The previous prime is 12910591. The next prime is 12910643. The reversal of 12910609 is 90601921.

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 12910609 - 2⁵ = 12910577 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12910679) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1557 + ... + 5314.

It is an arithmetic number, because the mean of its divisors is an integer number (3229840).

Almost surely, 2^12910609 is an apocalyptic number.

It is an amenable number.

12910609 is a deficient number, since it is larger than the sum of its proper divisors (8751).

12910609 is an equidigital number, since it uses as much as digits as its factorization.

12910609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8750.

The product of its (nonzero) digits is 972, while the sum is 28.

The square root of 12910609 is about 3593.1335906142. The cubic root of 12910609 is about 234.5932847326.

The spelling of 12910609 in words is "twelve million, nine hundred ten thousand, six hundred nine".