13869887 has 8 divisors (see below), whose sum is σ = 14065920. Its totient is φ = 13675480.

The previous prime is 13869853. The next prime is 13869899. The reversal of 13869887 is 78896831.

It is a happy number.

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 13869887 - 2¹⁰ = 13868863 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 (13869827) 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, 31088 + ... + 31530.

It is an arithmetic number, because the mean of its divisors is an integer number (1758240).

Almost surely, 2^13869887 is an apocalyptic number.

13869887 is a deficient number, since it is larger than the sum of its proper divisors (196033).

13869887 is a wasteful number, since it uses less digits than its factorization.

13869887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 813.

The product of its digits is 580608, while the sum is 50.

The square root of 13869887 is about 3724.2297190157. The cubic root of 13869887 is about 240.2652564897.

The spelling of 13869887 in words is "thirteen million, eight hundred sixty-nine thousand, eight hundred eighty-seven".