12805393 has 4 divisors (see below), whose sum is σ = 12882240. Its totient is φ = 12728548.

The previous prime is 12805349. The next prime is 12805417. The reversal of 12805393 is 39350821.

It is a happy number.

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 an emirpimes, since its reverse is a distinct semiprime: 39350821 = 467 ⋅84263.

It is a cyclic number.

It is not a de Polignac number, because 12805393 - 2²¹ = 10708241 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12805313) 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, 38173 + ... + 38506.

It is an arithmetic number, because the mean of its divisors is an integer number (3220560).

Almost surely, 2^12805393 is an apocalyptic number.

It is an amenable number.

12805393 is a deficient number, since it is larger than the sum of its proper divisors (76847).

12805393 is an equidigital number, since it uses as much as digits as its factorization.

12805393 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76846.

The product of its (nonzero) digits is 6480, while the sum is 31.

The square root of 12805393 is about 3578.4623792909. The cubic root of 12805393 is about 233.9542670018.

The spelling of 12805393 in words is "twelve million, eight hundred five thousand, three hundred ninety-three".