13857853 has 4 divisors (see below), whose sum is σ = 14335740. Its totient is φ = 13379968.

The previous prime is 13857841. The next prime is 13857871. The reversal of 13857853 is 35875831.

13857853 is digitally balanced in base 3, 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, and also an emirpimes, since its reverse is a distinct semiprime: 35875831 = 17 ⋅2110343.

It can be written as a sum of positive squares in 2 ways, for example, as 11108889 + 2748964 = 3333^2 + 1658^2 .

It is a cyclic number.

It is not a de Polignac number, because 13857853 - 2¹⁷ = 13726781 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 (13857803) 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, 238900 + ... + 238957.

It is an arithmetic number, because the mean of its divisors is an integer number (3583935).

Almost surely, 2^13857853 is an apocalyptic number.

It is an amenable number.

13857853 is a deficient number, since it is larger than the sum of its proper divisors (477887).

13857853 is an equidigital number, since it uses as much as digits as its factorization.

13857853 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 477886.

The product of its digits is 100800, while the sum is 40.

The square root of 13857853 is about 3722.6137323123. The cubic root of 13857853 is about 240.1957488647.

The spelling of 13857853 in words is "thirteen million, eight hundred fifty-seven thousand, eight hundred fifty-three".