13689808 has 20 divisors (see below), whose sum is σ = 28935648. Its totient is φ = 6222560.

The previous prime is 13689799. The next prime is 13689821. The reversal of 13689808 is 80898631.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

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, 38716 + ... + 39067.

Almost surely, 2^13689808 is an apocalyptic number.

It is an amenable number.

13689808 is an abundant number, since it is smaller than the sum of its proper divisors (15245840).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13689808 is a wasteful number, since it uses less digits than its factorization.

13689808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77802 (or 77796 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 43.

The square root of 13689808 is about 3699.9740539631. The cubic root of 13689808 is about 239.2208995061.

The spelling of 13689808 in words is "thirteen million, six hundred eighty-nine thousand, eight hundred eight".