13843387 has 4 divisors (see below), whose sum is σ = 13913856. Its totient is φ = 13772920.

The previous prime is 13843373. The next prime is 13843397. The reversal of 13843387 is 78334831.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 78334831 = 59 ⋅1327709.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13843387 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13843397) 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, 34939 + ... + 35332.

It is an arithmetic number, because the mean of its divisors is an integer number (3478464).

Almost surely, 2^13843387 is an apocalyptic number.

13843387 is a deficient number, since it is larger than the sum of its proper divisors (70469).

13843387 is an equidigital number, since it uses as much as digits as its factorization.

13843387 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70468.

The product of its digits is 48384, while the sum is 37.

The square root of 13843387 is about 3720.6702353205. The cubic root of 13843387 is about 240.1121408806.

The spelling of 13843387 in words is "thirteen million, eight hundred forty-three thousand, three hundred eighty-seven".