13889851 has 4 divisors (see below), whose sum is σ = 13930000. Its totient is φ = 13849704.

The previous prime is 13889831. The next prime is 13889873. The reversal of 13889851 is 15898831.

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 13889851 - 2¹⁵ = 13857083 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13889798 and 13889807.

It is not an unprimeable number, because it can be changed into a prime (13889831) 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, 19551 + ... + 20248.

It is an arithmetic number, because the mean of its divisors is an integer number (3482500).

Almost surely, 2^13889851 is an apocalyptic number.

13889851 is a deficient number, since it is larger than the sum of its proper divisors (40149).

13889851 is an equidigital number, since it uses as much as digits as its factorization.

13889851 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40148.

The product of its digits is 69120, while the sum is 43.

The square root of 13889851 is about 3726.9090410151. The cubic root of 13889851 is about 240.3804786738.

The spelling of 13889851 in words is "thirteen million, eight hundred eighty-nine thousand, eight hundred fifty-one".