13844981 has 4 divisors (see below), whose sum is σ = 14011872. Its totient is φ = 13678092.

The previous prime is 13844969. The next prime is 13845001. The reversal of 13844981 is 18944831.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 18944831 = 61 ⋅310571.

It is a cyclic number.

It is not a de Polignac number, because 13844981 - 2⁶ = 13844917 is a prime.

It is a super-2 number, since 2×13844981² = 383366997780722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13844911) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 83321 + ... + 83486.

It is an arithmetic number, because the mean of its divisors is an integer number (3502968).

Almost surely, 2^13844981 is an apocalyptic number.

It is an amenable number.

13844981 is a deficient number, since it is larger than the sum of its proper divisors (166891).

13844981 is an equidigital number, since it uses as much as digits as its factorization.

13844981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 166890.

The product of its digits is 27648, while the sum is 38.

The square root of 13844981 is about 3720.8844378723. The cubic root of 13844981 is about 240.1213564496.

The spelling of 13844981 in words is "thirteen million, eight hundred forty-four thousand, nine hundred eighty-one".