13853887 has 2 divisors, whose sum is σ = 13853888. Its totient is φ = 13853886.

The previous prime is 13853881. The next prime is 13853891. The reversal of 13853887 is 78835831.

It is a strong prime.

It is an emirp because it is prime and its reverse (78835831) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 13853887 - 2¹¹ = 13851839 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13853881) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6926943 + 6926944.

It is an arithmetic number, because the mean of its divisors is an integer number (6926944).

Almost surely, 2^13853887 is an apocalyptic number.

13853887 is a deficient number, since it is larger than the sum of its proper divisors (1).

13853887 is an equidigital number, since it uses as much as digits as its factorization.

13853887 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 161280, while the sum is 43.

The square root of 13853887 is about 3722.0810039546. The cubic root of 13853887 is about 240.1728326830.

The spelling of 13853887 in words is "thirteen million, eight hundred fifty-three thousand, eight hundred eighty-seven".