12238989 has 8 divisors (see below), whose sum is σ = 18649920. Its totient is φ = 6993696.

The previous prime is 12238949. The next prime is 12238991. The reversal of 12238989 is 98983221.

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

It is not a de Polignac number, because 12238989 - 2⁹ = 12238477 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 12238989.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12238939) 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 7 ways as a sum of consecutive naturals, for example, 291384 + ... + 291425.

It is an arithmetic number, because the mean of its divisors is an integer number (2331240).

Almost surely, 2^12238989 is an apocalyptic number.

It is an amenable number.

12238989 is a deficient number, since it is larger than the sum of its proper divisors (6410931).

12238989 is an equidigital number, since it uses as much as digits as its factorization.

12238989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 582819.

The product of its digits is 62208, while the sum is 42.

The square root of 12238989 is about 3498.4266463655. The cubic root of 12238989 is about 230.4527251717.

The spelling of 12238989 in words is "twelve million, two hundred thirty-eight thousand, nine hundred eighty-nine".