11938823 has 4 divisors (see below), whose sum is σ = 12857208. Its totient is φ = 11020440.

The previous prime is 11938793. The next prime is 11938853. The reversal of 11938823 is 32883911.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32883911 = 179 ⋅183709.

It is an interprime number because it is at equal distance from previous prime (11938793) and next prime (11938853).

It is a cyclic number.

It is not a de Polignac number, because 11938823 - 2¹⁰ = 11937799 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11938853) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 459173 + ... + 459198.

It is an arithmetic number, because the mean of its divisors is an integer number (3214302).

Almost surely, 2^11938823 is an apocalyptic number.

11938823 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

11938823 is a deficient number, since it is larger than the sum of its proper divisors (918385).

11938823 is an equidigital number, since it uses as much as digits as its factorization.

11938823 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 918384.

The product of its digits is 10368, while the sum is 35.

The square root of 11938823 is about 3455.2601928075. The cubic root of 11938823 is about 228.5531289107.

The spelling of 11938823 in words is "eleven million, nine hundred thirty-eight thousand, eight hundred twenty-three".