12309789 has 8 divisors (see below), whose sum is σ = 16856800. Its totient is φ = 7984656.

The previous prime is 12309769. The next prime is 12309797. The reversal of 12309789 is 98790321.

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

It is not a de Polignac number, because 12309789 - 2⁸ = 12309533 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12309719) 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, 55339 + ... + 55560.

It is an arithmetic number, because the mean of its divisors is an integer number (2107100).

Almost surely, 2^12309789 is an apocalyptic number.

It is an amenable number.

12309789 is a deficient number, since it is larger than the sum of its proper divisors (4547011).

12309789 is a wasteful number, since it uses less digits than its factorization.

12309789 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110939.

The product of its (nonzero) digits is 27216, while the sum is 39.

The square root of 12309789 is about 3508.5308891329. The cubic root of 12309789 is about 230.8962447034.

The spelling of 12309789 in words is "twelve million, three hundred nine thousand, seven hundred eighty-nine".