11983843 has 2 divisors, whose sum is σ = 11983844. Its totient is φ = 11983842.

The previous prime is 11983841. The next prime is 11983859. The reversal of 11983843 is 34838911.

It is a weak prime.

It is an emirp because it is prime and its reverse (34838911) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11983843 - 2¹ = 11983841 is a prime.

It is a super-2 number, since 2×11983843² = 287224986097298, which contains 22 as substring.

Together with 11983841, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (11983841) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5991921 + 5991922.

It is an arithmetic number, because the mean of its divisors is an integer number (5991922).

Almost surely, 2^11983843 is an apocalyptic number.

11983843 is a deficient number, since it is larger than the sum of its proper divisors (1).

11983843 is an equidigital number, since it uses as much as digits as its factorization.

11983843 is an evil number, because the sum of its binary digits is even.

The product of its digits is 20736, while the sum is 37.

The square root of 11983843 is about 3461.7687675522. The cubic root of 11983843 is about 228.8400515387.

It can be divided in two parts, 1198 and 3843, that added together give a square (5041 = 71²).

The spelling of 11983843 in words is "eleven million, nine hundred eighty-three thousand, eight hundred forty-three".