13806859 has 4 divisors (see below), whose sum is σ = 15062040. Its totient is φ = 12551680.

The previous prime is 13806857. The next prime is 13806869. The reversal of 13806859 is 95860831.

It is a happy number.

13806859 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.

It is a cyclic number.

It is not a de Polignac number, because 13806859 - 2¹ = 13806857 is a prime.

It is a super-3 number, since 3×13806859³ (a number of 22 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13806851) 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, 627574 + ... + 627595.

It is an arithmetic number, because the mean of its divisors is an integer number (3765510).

Almost surely, 2^13806859 is an apocalyptic number.

13806859 is a deficient number, since it is larger than the sum of its proper divisors (1255181).

13806859 is a wasteful number, since it uses less digits than its factorization.

13806859 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1255180.

The product of its (nonzero) digits is 51840, while the sum is 40.

The square root of 13806859 is about 3715.7581998833. The cubic root of 13806859 is about 239.9007633709.

The spelling of 13806859 in words is "thirteen million, eight hundred six thousand, eight hundred fifty-nine".