12856493 has 8 divisors (see below), whose sum is σ = 14183736. Its totient is φ = 11577600.

The previous prime is 12856489. The next prime is 12856499. The reversal of 12856493 is 39465821.

It is a happy number.

12856493 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 487204 + 12369289 = 698^2 + 3517^2 .

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 12856493 - 2² = 12856489 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12856499) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11528 + ... + 12593.

It is an arithmetic number, because the mean of its divisors is an integer number (1772967).

Almost surely, 2^12856493 is an apocalyptic number.

12856493 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

12856493 is a deficient number, since it is larger than the sum of its proper divisors (1327243).

12856493 is a wasteful number, since it uses less digits than its factorization.

12856493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24175.

The product of its digits is 51840, while the sum is 38.

The square root of 12856493 is about 3585.5952086090. The cubic root of 12856493 is about 234.2650526204.

The spelling of 12856493 in words is "twelve million, eight hundred fifty-six thousand, four hundred ninety-three".