12189697 has 16 divisors (see below), whose sum is σ = 14636160. Its totient is φ = 10029312.

The previous prime is 12189677. The next prime is 12189703. The reversal of 12189697 is 79698121.

It is a cyclic number.

It is not a de Polignac number, because 12189697 - 2¹¹ = 12187649 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12189607) 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, 2748 + ... + 5650.

It is an arithmetic number, because the mean of its divisors is an integer number (914760).

It is a Proth number, since it is equal to 93 ⋅ 2¹⁷ + 1 and 93 < 2¹⁷.

Almost surely, 2^12189697 is an apocalyptic number.

12189697 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

12189697 is a deficient number, since it is larger than the sum of its proper divisors (2446463).

12189697 is a wasteful number, since it uses less digits than its factorization.

12189697 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2952.

The product of its digits is 54432, while the sum is 43.

The square root of 12189697 is about 3491.3746576384. The cubic root of 12189697 is about 230.1429294341.

The spelling of 12189697 in words is "twelve million, one hundred eighty-nine thousand, six hundred ninety-seven".