12809379 has 8 divisors (see below), whose sum is σ = 18631872. Its totient is φ = 7763240.

The previous prime is 12809359. The next prime is 12809491. The reversal of 12809379 is 97390821.

12809379 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 12809379 - 2¹⁵ = 12776611 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12809359) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 194049 + ... + 194114.

It is an arithmetic number, because the mean of its divisors is an integer number (2328984).

Almost surely, 2^12809379 is an apocalyptic number.

12809379 is a deficient number, since it is larger than the sum of its proper divisors (5822493).

12809379 is a wasteful number, since it uses less digits than its factorization.

12809379 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 388177.

The product of its (nonzero) digits is 27216, while the sum is 39.

The square root of 12809379 is about 3579.0192790763. The cubic root of 12809379 is about 233.9785391963.

The spelling of 12809379 in words is "twelve million, eight hundred nine thousand, three hundred seventy-nine".