11986843 has 4 divisors (see below), whose sum is σ = 13076568. Its totient is φ = 10897120.

The previous prime is 11986837. The next prime is 11986847. The reversal of 11986843 is 34868911.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 11986843 - 2⁵ = 11986811 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11986796 and 11986805.

It is not an unprimeable number, because it can be changed into a prime (11986847) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 544846 + ... + 544867.

It is an arithmetic number, because the mean of its divisors is an integer number (3269142).

Almost surely, 2^11986843 is an apocalyptic number.

11986843 is a deficient number, since it is larger than the sum of its proper divisors (1089725).

11986843 is a wasteful number, since it uses less digits than its factorization.

11986843 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1089724.

The product of its digits is 41472, while the sum is 40.

The square root of 11986843 is about 3462.2020449419. The cubic root of 11986843 is about 228.8591456605.

It can be divided in two parts, 119868 and 43, that added together give a palindrome (119911).

The spelling of 11986843 in words is "eleven million, nine hundred eighty-six thousand, eight hundred forty-three".