12339505 has 4 divisors (see below), whose sum is σ = 14807412. Its totient is φ = 9871600.

The previous prime is 12339497. The next prime is 12339511. The reversal of 12339505 is 50593321.

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

It can be written as a sum of positive squares in 2 ways, for example, as 6390784 + 5948721 = 2528^2 + 2439^2 .

It is not a de Polignac number, because 12339505 - 2³ = 12339497 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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, 1233946 + ... + 1233955.

It is an arithmetic number, because the mean of its divisors is an integer number (3701853).

Almost surely, 2^12339505 is an apocalyptic number.

It is an amenable number.

12339505 is a deficient number, since it is larger than the sum of its proper divisors (2467907).

12339505 is an equidigital number, since it uses as much as digits as its factorization.

12339505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2467906.

The product of its (nonzero) digits is 4050, while the sum is 28.

The square root of 12339505 is about 3512.7631574019. The cubic root of 12339505 is about 231.0818909697.

The spelling of 12339505 in words is "twelve million, three hundred thirty-nine thousand, five hundred five".