12667389 has 8 divisors (see below), whose sum is σ = 19302720. Its totient is φ = 7238496.

The previous prime is 12667387. The next prime is 12667427. The reversal of 12667389 is 98376621.

It is a happy number.

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

It is not a de Polignac number, because 12667389 - 2¹ = 12667387 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12667389.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12667381) 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, 301584 + ... + 301625.

It is an arithmetic number, because the mean of its divisors is an integer number (2412840).

Almost surely, 2^12667389 is an apocalyptic number.

It is an amenable number.

12667389 is a deficient number, since it is larger than the sum of its proper divisors (6635331).

12667389 is an equidigital number, since it uses as much as digits as its factorization.

12667389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 603219.

The product of its digits is 108864, while the sum is 42.

The square root of 12667389 is about 3559.1275616364. The cubic root of 12667389 is about 233.1107862207.

The spelling of 12667389 in words is "twelve million, six hundred sixty-seven thousand, three hundred eighty-nine".