13397843 has 4 divisors (see below), whose sum is σ = 13410840. Its totient is φ = 13384848.

The previous prime is 13397837. The next prime is 13397851. The reversal of 13397843 is 34879331.

13397843 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.

It is a cyclic number.

It is not a de Polignac number, because 13397843 - 2⁴ = 13397827 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13397797 and 13397806.

It is not an unprimeable number, because it can be changed into a prime (13397803) 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, 4805 + ... + 7062.

It is an arithmetic number, because the mean of its divisors is an integer number (3352710).

Almost surely, 2^13397843 is an apocalyptic number.

13397843 is a deficient number, since it is larger than the sum of its proper divisors (12997).

13397843 is a wasteful number, since it uses less digits than its factorization.

13397843 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12996.

The product of its digits is 54432, while the sum is 38.

The square root of 13397843 is about 3660.3064079391. The cubic root of 13397843 is about 237.5080285375.

The spelling of 13397843 in words is "thirteen million, three hundred ninety-seven thousand, eight hundred forty-three".