13887843 has 8 divisors (see below), whose sum is σ = 18642000. Its totient is φ = 9196128.

The previous prime is 13887823. The next prime is 13887857. The reversal of 13887843 is 34878831.

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

It is not a de Polignac number, because 13887843 - 2¹³ = 13879651 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 13887795 and 13887804.

It is not an unprimeable number, because it can be changed into a prime (13887823) 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, 15088 + ... + 15981.

It is an arithmetic number, because the mean of its divisors is an integer number (2330250).

Almost surely, 2^13887843 is an apocalyptic number.

13887843 is a deficient number, since it is larger than the sum of its proper divisors (4754157).

13887843 is a wasteful number, since it uses less digits than its factorization.

13887843 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31221.

The product of its digits is 129024, while the sum is 42.

The square root of 13887843 is about 3726.6396391387. The cubic root of 13887843 is about 240.3688945019.

The spelling of 13887843 in words is "thirteen million, eight hundred eighty-seven thousand, eight hundred forty-three".