12017917 has 8 divisors (see below), whose sum is σ = 12260024. Its totient is φ = 11778048.

The previous prime is 12017903. The next prime is 12017921. The reversal of 12017917 is 71971021.

It can be written as a sum of positive squares in 4 ways, for example, as 4761 + 12013156 = 69^2 + 3466^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12017917 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 (12011917) 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, 13663 + ... + 14515.

It is an arithmetic number, because the mean of its divisors is an integer number (1532503).

Almost surely, 2^12017917 is an apocalyptic number.

It is an amenable number.

12017917 is a deficient number, since it is larger than the sum of its proper divisors (242107).

12017917 is an equidigital number, since it uses as much as digits as its factorization.

12017917 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1119.

The product of its (nonzero) digits is 882, while the sum is 28.

The square root of 12017917 is about 3466.6867467367. The cubic root of 12017917 is about 229.0567354324.

Adding to 12017917 its reverse (71971021), we get a palindrome (83988938).

The spelling of 12017917 in words is "twelve million, seventeen thousand, nine hundred seventeen".