12285789 has 4 divisors (see below), whose sum is σ = 16381056. Its totient is φ = 8190524.

The previous prime is 12285731. The next prime is 12285797. The reversal of 12285789 is 98758221.

12285789 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 98758221 = 3 ⋅32919407.

It is a cyclic number.

It is not a de Polignac number, because 12285789 - 2⁷ = 12285661 is a prime.

It is a super-2 number, since 2×12285789² = 301881222705042, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 12285789.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12285709) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2047629 + ... + 2047634.

It is an arithmetic number, because the mean of its divisors is an integer number (4095264).

Almost surely, 2^12285789 is an apocalyptic number.

It is an amenable number.

12285789 is a deficient number, since it is larger than the sum of its proper divisors (4095267).

12285789 is an equidigital number, since it uses as much as digits as its factorization.

12285789 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4095266.

The product of its digits is 80640, while the sum is 42.

The square root of 12285789 is about 3505.1089854668. The cubic root of 12285789 is about 230.7460900813.

The spelling of 12285789 in words is "twelve million, two hundred eighty-five thousand, seven hundred eighty-nine".