13888349 has 4 divisors (see below), whose sum is σ = 13896636. Its totient is φ = 13880064.

The previous prime is 13888331. The next prime is 13888351. The reversal of 13888349 is 94388831.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 1708249 + 12180100 = 1307^2 + 3490^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13888349 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13888309) 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, 644 + ... + 5309.

It is an arithmetic number, because the mean of its divisors is an integer number (3474159).

Almost surely, 2^13888349 is an apocalyptic number.

It is an amenable number.

13888349 is a deficient number, since it is larger than the sum of its proper divisors (8287).

13888349 is an equidigital number, since it uses as much as digits as its factorization.

13888349 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8286.

The product of its digits is 165888, while the sum is 44.

The square root of 13888349 is about 3726.7075281004. The cubic root of 13888349 is about 240.3718137261.

The spelling of 13888349 in words is "thirteen million, eight hundred eighty-eight thousand, three hundred forty-nine".