13888587 has 4 divisors (see below), whose sum is σ = 18518120. Its totient is φ = 9259056.

The previous prime is 13888577. The next prime is 13888591. The reversal of 13888587 is 78588831.

13888587 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 78588831 = 3 ⋅26196277.

It is not a de Polignac number, because 13888587 - 2⁴ = 13888571 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13888577) 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, 2314762 + ... + 2314767.

It is an arithmetic number, because the mean of its divisors is an integer number (4629530).

Almost surely, 2^13888587 is an apocalyptic number.

13888587 is a deficient number, since it is larger than the sum of its proper divisors (4629533).

13888587 is an equidigital number, since it uses as much as digits as its factorization.

13888587 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4629532.

The product of its digits is 430080, while the sum is 48.

The square root of 13888587 is about 3726.7394596349. The cubic root of 13888587 is about 240.3731867755.

The spelling of 13888587 in words is "thirteen million, eight hundred eighty-eight thousand, five hundred eighty-seven".