13873986 has 48 divisors (see below), whose sum is σ = 34632000. Its totient is φ = 3932064.

The previous prime is 13873967. The next prime is 13873987. The reversal of 13873986 is 68937831.

It is a happy number.

13873986 is digitally balanced in base 2 and base 8, because in such bases it contains all the possibile digits an equal number of times.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

13873986 is strictly pandigital in base 8.

It is not an unprimeable number, because it can be changed into a prime (13873987) 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, 18405 + ... + 19143.

It is an arithmetic number, because the mean of its divisors is an integer number (721500).

Almost surely, 2^13873986 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13873986, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17316000).

13873986 is an abundant number, since it is smaller than the sum of its proper divisors (20758014).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13873986 is a wasteful number, since it uses less digits than its factorization.

13873986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 903 (or 900 counting only the distinct ones).

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

The square root of 13873986 is about 3724.7799935030. The cubic root of 13873986 is about 240.2889228753.

The spelling of 13873986 in words is "thirteen million, eight hundred seventy-three thousand, nine hundred eighty-six".