12009785 has 8 divisors (see below), whose sum is σ = 14508096. Its totient is φ = 9543600.

The previous prime is 12009779. The next prime is 12009791. The reversal of 12009785 is 58790021.

12009785 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (12009779) and next prime (12009791).

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

It is not a de Polignac number, because 12009785 - 2¹⁶ = 11944249 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7199 + ... + 8708.

It is an arithmetic number, because the mean of its divisors is an integer number (1813512).

Almost surely, 2^12009785 is an apocalyptic number.

It is an amenable number.

12009785 is a deficient number, since it is larger than the sum of its proper divisors (2498311).

12009785 is a wasteful number, since it uses less digits than its factorization.

12009785 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16063.

The product of its (nonzero) digits is 5040, while the sum is 32.

The square root of 12009785 is about 3465.5136704391. The cubic root of 12009785 is about 229.0050595426.

The spelling of 12009785 in words is "twelve million, nine thousand, seven hundred eighty-five".