12339745 has 8 divisors (see below), whose sum is σ = 16153920. Its totient is φ = 8974320.

The previous prime is 12339731. The next prime is 12339749. The reversal of 12339745 is 54793321.

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

It is not a de Polignac number, because 12339745 - 2⁷ = 12339617 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12339745.

It is not an unprimeable number, because it can be changed into a prime (12339749) 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, 112125 + ... + 112234.

It is an arithmetic number, because the mean of its divisors is an integer number (2019240).

Almost surely, 2^12339745 is an apocalyptic number.

It is an amenable number.

12339745 is a deficient number, since it is larger than the sum of its proper divisors (3814175).

12339745 is a wasteful number, since it uses less digits than its factorization.

12339745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 224375.

The product of its digits is 22680, while the sum is 34.

The square root of 12339745 is about 3512.7973183775. The cubic root of 12339745 is about 231.0833891199.

It can be divided in two parts, 12 and 339745, that multiplied together give a triangular number (4076940 = T₂₈₅₅).

The spelling of 12339745 in words is "twelve million, three hundred thirty-nine thousand, seven hundred forty-five".