12185897 has 8 divisors (see below), whose sum is σ = 13140960. Its totient is φ = 11262240.

The previous prime is 12185891. The next prime is 12185917. The reversal of 12185897 is 79858121.

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

It is a cyclic number.

It is not a de Polignac number, because 12185897 - 2¹⁰ = 12184873 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (41).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12185891) 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 7 ways as a sum of consecutive naturals, for example, 7043 + ... + 8600.

It is an arithmetic number, because the mean of its divisors is an integer number (1642620).

Almost surely, 2^12185897 is an apocalyptic number.

It is an amenable number.

12185897 is a deficient number, since it is larger than the sum of its proper divisors (955063).

12185897 is a wasteful number, since it uses less digits than its factorization.

12185897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15703.

The product of its digits is 40320, while the sum is 41.

The square root of 12185897 is about 3490.8304169638. The cubic root of 12185897 is about 230.1190121313.

The spelling of 12185897 in words is "twelve million, one hundred eighty-five thousand, eight hundred ninety-seven".