12339864 has 80 divisors (see below), whose sum is σ = 35065800. Its totient is φ = 4053888.

The previous prime is 12339863. The next prime is 12339889. The reversal of 12339864 is 46893321.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12339863) 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 19 ways as a sum of consecutive naturals, for example, 88707 + ... + 88845.

Almost surely, 2^12339864 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12339864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17532900).

12339864 is an abundant number, since it is smaller than the sum of its proper divisors (22725936).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12339864 is a wasteful number, since it uses less digits than its factorization.

12339864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 294 (or 281 counting only the distinct ones).

The product of its digits is 31104, while the sum is 36.

The square root of 12339864 is about 3512.8142564047. The cubic root of 12339864 is about 231.0841319454.

It can be divided in two parts, 12339 and 864, that added together give a triangular number (13203 = T₁₆₂).

The spelling of 12339864 in words is "twelve million, three hundred thirty-nine thousand, eight hundred sixty-four".