12117417 has 16 divisors (see below), whose sum is σ = 17519040. Its totient is φ = 7405632.

The previous prime is 12117397. The next prime is 12117433. The reversal of 12117417 is 71471121.

It is not a de Polignac number, because 12117417 - 2⁷ = 12117289 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12117437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5134 + ... + 7112.

It is an arithmetic number, because the mean of its divisors is an integer number (1094940).

Almost surely, 2^12117417 is an apocalyptic number.

It is an amenable number.

12117417 is a deficient number, since it is larger than the sum of its proper divisors (5401623).

12117417 is a wasteful number, since it uses less digits than its factorization.

12117417 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2152.

The product of its digits is 392, while the sum is 24.

The square root of 12117417 is about 3481.0080436563. The cubic root of 12117417 is about 229.6871423660.

Adding to 12117417 its reverse (71471121), we get a palindrome (83588538).

The spelling of 12117417 in words is "twelve million, one hundred seventeen thousand, four hundred seventeen".