12388689 has 12 divisors (see below), whose sum is σ = 17926272. Its totient is φ = 8244600.

The previous prime is 12388669. The next prime is 12388693. The reversal of 12388689 is 98688321.

It is not a de Polignac number, because 12388689 - 2⁵ = 12388657 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12388609) 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 11 ways as a sum of consecutive naturals, for example, 7444 + ... + 8954.

It is an arithmetic number, because the mean of its divisors is an integer number (1493856).

Almost surely, 2^12388689 is an apocalyptic number.

It is an amenable number.

12388689 is a deficient number, since it is larger than the sum of its proper divisors (5537583).

12388689 is a wasteful number, since it uses less digits than its factorization.

12388689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2428 (or 2425 counting only the distinct ones).

The product of its digits is 165888, while the sum is 45.

The square root of 12388689 is about 3519.7569518363. The cubic root of 12388689 is about 231.3885068472.

The spelling of 12388689 in words is "twelve million, three hundred eighty-eight thousand, six hundred eighty-nine".