12285779 has 4 divisors (see below), whose sum is σ = 13402680. Its totient is φ = 11168880.

The previous prime is 12285731. The next prime is 12285797. The reversal of 12285779 is 97758221.

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

It is a cyclic number.

It is not a de Polignac number, because 12285779 - 2⁸ = 12285523 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 16.

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

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 558434 + ... + 558455.

It is an arithmetic number, because the mean of its divisors is an integer number (3350670).

Almost surely, 2^12285779 is an apocalyptic number.

12285779 is a deficient number, since it is larger than the sum of its proper divisors (1116901).

12285779 is a wasteful number, since it uses less digits than its factorization.

12285779 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1116900.

The product of its digits is 70560, while the sum is 41.

The square root of 12285779 is about 3505.1075589773. The cubic root of 12285779 is about 230.7460274762.

It can be divided in two parts, 1228 and 5779, that added together give a palindrome (7007).

The spelling of 12285779 in words is "twelve million, two hundred eighty-five thousand, seven hundred seventy-nine".