12933857 has 4 divisors (see below), whose sum is σ = 13116096. Its totient is φ = 12751620.

The previous prime is 12933853. The next prime is 12933871. The reversal of 12933857 is 75833921.

12933857 is digitally balanced in base 2, 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.

It is a cyclic number.

It is not a de Polignac number, because 12933857 - 2² = 12933853 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12933857.

It is not an unprimeable number, because it can be changed into a prime (12933853) 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, 91013 + ... + 91154.

It is an arithmetic number, because the mean of its divisors is an integer number (3279024).

Almost surely, 2^12933857 is an apocalyptic number.

It is an amenable number.

12933857 is a deficient number, since it is larger than the sum of its proper divisors (182239).

12933857 is an equidigital number, since it uses as much as digits as its factorization.

12933857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 182238.

The product of its digits is 45360, while the sum is 38.

The square root of 12933857 is about 3596.3671948231. The cubic root of 12933857 is about 234.7340101987.

The spelling of 12933857 in words is "twelve million, nine hundred thirty-three thousand, eight hundred fifty-seven".