13856837 has 4 divisors (see below), whose sum is σ = 14032320. Its totient is φ = 13681356.

The previous prime is 13856831. The next prime is 13856839. The reversal of 13856837 is 73865831.

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 a de Polignac number, because none of the positive numbers 2^k-13856837 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13856794 and 13856803.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13856831) 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 3 ways as a sum of consecutive naturals, for example, 87623 + ... + 87780.

It is an arithmetic number, because the mean of its divisors is an integer number (3508080).

Almost surely, 2^13856837 is an apocalyptic number.

It is an amenable number.

13856837 is a deficient number, since it is larger than the sum of its proper divisors (175483).

13856837 is an equidigital number, since it uses as much as digits as its factorization.

13856837 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 175482.

The product of its digits is 120960, while the sum is 41.

The square root of 13856837 is about 3722.4772665525. The cubic root of 13856837 is about 240.1898786709.

The spelling of 13856837 in words is "thirteen million, eight hundred fifty-six thousand, eight hundred thirty-seven".