13844987 has 24 divisors (see below), whose sum is σ = 16338240. Its totient is φ = 11681280.

The previous prime is 13844969. The next prime is 13845001. The reversal of 13844987 is 78944831.

It is a de Polignac number, because none of the positive numbers 2^k-13844987 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13844917) 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, 175214 + ... + 175292.

It is an arithmetic number, because the mean of its divisors is an integer number (680760).

Almost surely, 2^13844987 is an apocalyptic number.

13844987 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

13844987 is a deficient number, since it is larger than the sum of its proper divisors (2493253).

13844987 is a wasteful number, since it uses less digits than its factorization.

13844987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 183 (or 170 counting only the distinct ones).

The product of its digits is 193536, while the sum is 44.

The square root of 13844987 is about 3720.8852441321. The cubic root of 13844987 is about 240.1213911367.

The spelling of 13844987 in words is "thirteen million, eight hundred forty-four thousand, nine hundred eighty-seven".