13856393 has 4 divisors (see below), whose sum is σ = 13986000. Its totient is φ = 13726788.

The previous prime is 13856369. The next prime is 13856413. The reversal of 13856393 is 39365831.

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 13856393 - 2⁶ = 13856329 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13856593) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 64643 + ... + 64856.

It is an arithmetic number, because the mean of its divisors is an integer number (3496500).

Almost surely, 2^13856393 is an apocalyptic number.

It is an amenable number.

13856393 is a deficient number, since it is larger than the sum of its proper divisors (129607).

13856393 is a wasteful number, since it uses less digits than its factorization.

13856393 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129606.

The product of its digits is 58320, while the sum is 38.

The square root of 13856393 is about 3722.4176283700. The cubic root of 13856393 is about 240.1873132600.

The spelling of 13856393 in words is "thirteen million, eight hundred fifty-six thousand, three hundred ninety-three".