13887579 has 8 divisors (see below), whose sum is σ = 18591552. Its totient is φ = 9221000.

The previous prime is 13887571. The next prime is 13887611. The reversal of 13887579 is 97578831.

13887579 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 13887579 - 2³ = 13887571 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13887571) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8469 + ... + 9974.

It is an arithmetic number, because the mean of its divisors is an integer number (2323944).

Almost surely, 2^13887579 is an apocalyptic number.

13887579 is a deficient number, since it is larger than the sum of its proper divisors (4703973).

13887579 is a wasteful number, since it uses less digits than its factorization.

13887579 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18697.

The product of its digits is 423360, while the sum is 48.

The square root of 13887579 is about 3726.6042183199. The cubic root of 13887579 is about 240.3673714002.

The spelling of 13887579 in words is "thirteen million, eight hundred eighty-seven thousand, five hundred seventy-nine".