13684389 has 16 divisors (see below), whose sum is σ = 19404480. Its totient is φ = 8553600.

The previous prime is 13684387. The next prime is 13684393. The reversal of 13684389 is 98348631.

It is a happy number.

13684389 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 13684389 - 2¹ = 13684387 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 13684389.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13684387) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4569 + ... + 6945.

It is an arithmetic number, because the mean of its divisors is an integer number (1212780).

Almost surely, 2^13684389 is an apocalyptic number.

13684389 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

13684389 is a deficient number, since it is larger than the sum of its proper divisors (5720091).

13684389 is a wasteful number, since it uses less digits than its factorization.

13684389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2500.

The product of its digits is 124416, while the sum is 42.

The square root of 13684389 is about 3699.2416790472. The cubic root of 13684389 is about 239.1893307863.

The spelling of 13684389 in words is "thirteen million, six hundred eighty-four thousand, three hundred eighty-nine".