13887693 has 24 divisors (see below), whose sum is σ = 21138208. Its totient is φ = 9109584.

The previous prime is 13887683. The next prime is 13887719. The reversal of 13887693 is 39678831.

It is a happy number.

It is not a de Polignac number, because 13887693 - 2⁴ = 13887677 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13887683) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 15855 + ... + 16707.

Almost surely, 2^13887693 is an apocalyptic number.

It is an amenable number.

13887693 is a deficient number, since it is larger than the sum of its proper divisors (7250515).

13887693 is an frugal number, since it uses more digits than its factorization.

13887693 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 935 (or 923 counting only the distinct ones).

The product of its digits is 217728, while the sum is 45.

The square root of 13887693 is about 3726.6195137148. The cubic root of 13887693 is about 240.3680291056.

The spelling of 13887693 in words is "thirteen million, eight hundred eighty-seven thousand, six hundred ninety-three".