13869613 has 2 divisors, whose sum is σ = 13869614. Its totient is φ = 13869612.

The previous prime is 13869593. The next prime is 13869629. The reversal of 13869613 is 31696831.

13869613 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13089924 + 779689 = 3618^2 + 883^2 .

It is an emirp because it is prime and its reverse (31696831) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 13869613 - 2¹⁷ = 13738541 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13869643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6934806 + 6934807.

It is an arithmetic number, because the mean of its divisors is an integer number (6934807).

Almost surely, 2^13869613 is an apocalyptic number.

It is an amenable number.

13869613 is a deficient number, since it is larger than the sum of its proper divisors (1).

13869613 is an equidigital number, since it uses as much as digits as its factorization.

13869613 is an evil number, because the sum of its binary digits is even.

The product of its digits is 23328, while the sum is 37.

The square root of 13869613 is about 3724.1929327037. The cubic root of 13869613 is about 240.2636743303.

It can be divided in two parts, 138 and 69613, that added together give a triangular number (69751 = T₃₇₃).

The spelling of 13869613 in words is "thirteen million, eight hundred sixty-nine thousand, six hundred thirteen".