12389765 has 8 divisors (see below), whose sum is σ = 14975520. Its totient is φ = 9839952.

The previous prime is 12389761. The next prime is 12389789. The reversal of 12389765 is 56798321.

12389765 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 12389765 - 2² = 12389761 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12389761) 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, 8219 + ... + 9608.

It is an arithmetic number, because the mean of its divisors is an integer number (1871940).

Almost surely, 2^12389765 is an apocalyptic number.

It is an amenable number.

12389765 is a deficient number, since it is larger than the sum of its proper divisors (2585755).

12389765 is a wasteful number, since it uses less digits than its factorization.

12389765 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17971.

The product of its digits is 90720, while the sum is 41.

The square root of 12389765 is about 3519.9097999807. The cubic root of 12389765 is about 231.3952056143.

The spelling of 12389765 in words is "twelve million, three hundred eighty-nine thousand, seven hundred sixty-five".