13840413 has 4 divisors (see below), whose sum is σ = 18453888. Its totient is φ = 9226940.

The previous prime is 13840399. The next prime is 13840423. The reversal of 13840413 is 31404831.

13840413 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 a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 13840413 - 2⁵ = 13840381 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13840423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2306733 + ... + 2306738.

It is an arithmetic number, because the mean of its divisors is an integer number (4613472).

Almost surely, 2^13840413 is an apocalyptic number.

It is an amenable number.

13840413 is a deficient number, since it is larger than the sum of its proper divisors (4613475).

13840413 is an equidigital number, since it uses as much as digits as its factorization.

13840413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4613474.

The product of its (nonzero) digits is 1152, while the sum is 24.

The square root of 13840413 is about 3720.2705546774. The cubic root of 13840413 is about 240.0949450732.

The spelling of 13840413 in words is "thirteen million, eight hundred forty thousand, four hundred thirteen".