12382789 has 4 divisors (see below), whose sum is σ = 12498624. Its totient is φ = 12266956.

The previous prime is 12382787. The next prime is 12382807. The reversal of 12382789 is 98728321.

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, and also an emirpimes, since its reverse is a distinct semiprime: 98728321 = 37 ⋅2668333.

It is a cyclic number.

It is not a de Polignac number, because 12382789 - 2¹ = 12382787 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12382781) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is an upside-down number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 57757 + ... + 57970.

It is an arithmetic number, because the mean of its divisors is an integer number (3124656).

Almost surely, 2^12382789 is an apocalyptic number.

It is an amenable number.

12382789 is a deficient number, since it is larger than the sum of its proper divisors (115835).

12382789 is a wasteful number, since it uses less digits than its factorization.

12382789 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115834.

The product of its digits is 48384, while the sum is 40.

The square root of 12382789 is about 3518.9187259725. The cubic root of 12382789 is about 231.3517687934.

The spelling of 12382789 in words is "twelve million, three hundred eighty-two thousand, seven hundred eighty-nine".