13860813 has 16 divisors (see below), whose sum is σ = 19275776. Its totient is φ = 8849520.

The previous prime is 13860809. The next prime is 13860827. The reversal of 13860813 is 31806831.

13860813 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 13860813 - 2² = 13860809 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 (13860883) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8856 + ... + 10302.

It is an arithmetic number, because the mean of its divisors is an integer number (1204736).

Almost surely, 2^13860813 is an apocalyptic number.

It is an amenable number.

13860813 is a deficient number, since it is larger than the sum of its proper divisors (5414963).

13860813 is a wasteful number, since it uses less digits than its factorization.

13860813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1584.

The product of its (nonzero) digits is 3456, while the sum is 30.

The square root of 13860813 is about 3723.0112812077. The cubic root of 13860813 is about 240.2128493684.

The spelling of 13860813 in words is "thirteen million, eight hundred sixty thousand, eight hundred thirteen".