11843823 has 4 divisors (see below), whose sum is σ = 15791768. Its totient is φ = 7895880.

The previous prime is 11843809. The next prime is 11843879. The reversal of 11843823 is 32834811.

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

It is not a de Polignac number, because 11843823 - 2⁸ = 11843567 is a prime.

It is a super-2 number, since 2×11843823² = 280552286510658, 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 (11843323) 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, 1973968 + ... + 1973973.

It is an arithmetic number, because the mean of its divisors is an integer number (3947942).

Almost surely, 2^11843823 is an apocalyptic number.

11843823 is a deficient number, since it is larger than the sum of its proper divisors (3947945).

11843823 is an equidigital number, since it uses as much as digits as its factorization.

11843823 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3947944.

The product of its digits is 4608, while the sum is 30.

The square root of 11843823 is about 3441.4855803853. The cubic root of 11843823 is about 227.9452969718.

The spelling of 11843823 in words is "eleven million, eight hundred forty-three thousand, eight hundred twenty-three".