13856223 has 4 divisors (see below), whose sum is σ = 18474968. Its totient is φ = 9237480.

The previous prime is 13856221. The next prime is 13856231. The reversal of 13856223 is 32265831.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 13856223 - 2¹ = 13856221 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13856221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2309368 + ... + 2309373.

It is an arithmetic number, because the mean of its divisors is an integer number (4618742).

Almost surely, 2^13856223 is an apocalyptic number.

13856223 is a deficient number, since it is larger than the sum of its proper divisors (4618745).

13856223 is an equidigital number, since it uses as much as digits as its factorization.

13856223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4618744.

The product of its digits is 8640, while the sum is 30.

The square root of 13856223 is about 3722.3947936779. The cubic root of 13856223 is about 240.1863309935.

The spelling of 13856223 in words is "thirteen million, eight hundred fifty-six thousand, two hundred twenty-three".