12047917 has 16 divisors (see below), whose sum is σ = 14705280. Its totient is φ = 9635328.

The previous prime is 12047911. The next prime is 12047921. The reversal of 12047917 is 71974021.

12047917 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12047917 - 2³ = 12047909 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 (12047911) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15934 + ... + 16672.

It is an arithmetic number, because the mean of its divisors is an integer number (919080).

Almost surely, 2^12047917 is an apocalyptic number.

12047917 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

12047917 is a deficient number, since it is larger than the sum of its proper divisors (2657363).

12047917 is a wasteful number, since it uses less digits than its factorization.

12047917 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 900.

The product of its (nonzero) digits is 3528, while the sum is 31.

The square root of 12047917 is about 3471.0109478364. The cubic root of 12047917 is about 229.2471730958.

The spelling of 12047917 in words is "twelve million, forty-seven thousand, nine hundred seventeen".