12930309 has 24 divisors (see below), whose sum is σ = 21490560. Its totient is φ = 7338528.

The previous prime is 12930299. The next prime is 12930341. The reversal of 12930309 is 90303921.

It is not a de Polignac number, because 12930309 - 2¹¹ = 12928261 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12930389) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9907 + ... + 11135.

It is an arithmetic number, because the mean of its divisors is an integer number (895440).

Almost surely, 2^12930309 is an apocalyptic number.

It is an amenable number.

12930309 is a deficient number, since it is larger than the sum of its proper divisors (8560251).

12930309 is a wasteful number, since it uses less digits than its factorization.

12930309 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1409 (or 1406 counting only the distinct ones).

The product of its (nonzero) digits is 1458, while the sum is 27.

The square root of 12930309 is about 3595.8738854415. The cubic root of 12930309 is about 234.7125442525.

The spelling of 12930309 in words is "twelve million, nine hundred thirty thousand, three hundred nine".