12243939 has 8 divisors (see below), whose sum is σ = 16423680. Its totient is φ = 8113416.

The previous prime is 12243937. The next prime is 12243971. The reversal of 12243939 is 93934221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12243939 - 2¹ = 12243937 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12243937) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11719 + ... + 12720.

It is an arithmetic number, because the mean of its divisors is an integer number (2052960).

Almost surely, 2^12243939 is an apocalyptic number.

12243939 is a deficient number, since it is larger than the sum of its proper divisors (4179741).

12243939 is a wasteful number, since it uses less digits than its factorization.

12243939 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24609.

The product of its digits is 11664, while the sum is 33.

The square root of 12243939 is about 3499.1340357294. The cubic root of 12243939 is about 230.4837894815.

It can be divided in two parts, 12 and 243939, that added together give a triangular number (243951 = T₆₉₈).

The spelling of 12243939 in words is "twelve million, two hundred forty-three thousand, nine hundred thirty-nine".