12612189 has 4 divisors (see below), whose sum is σ = 16816256. Its totient is φ = 8408124.

The previous prime is 12612169. The next prime is 12612191. The reversal of 12612189 is 98121621.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 12612189 - 2¹² = 12608093 is a prime.

It is a super-2 number, since 2×12612189² = 318134622743442, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12612109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2102029 + ... + 2102034.

It is an arithmetic number, because the mean of its divisors is an integer number (4204064).

Almost surely, 2^12612189 is an apocalyptic number.

It is an amenable number.

12612189 is a deficient number, since it is larger than the sum of its proper divisors (4204067).

12612189 is an equidigital number, since it uses as much as digits as its factorization.

12612189 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4204066.

The product of its digits is 1728, while the sum is 30.

The square root of 12612189 is about 3551.3643856974. The cubic root of 12612189 is about 232.7716884065.

The spelling of 12612189 in words is "twelve million, six hundred twelve thousand, one hundred eighty-nine".