12439880 has 16 divisors (see below), whose sum is σ = 27989820. Its totient is φ = 4975936.

The previous prime is 12439879. The next prime is 12439907. The reversal of 12439880 is 8893421.

It is a happy number.

12439880 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 12096484 + 343396 = 3478^2 + 586^2 .

It is a super-2 number, since 2×12439880² = 309501228828800, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 12439880.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 155459 + ... + 155538.

Almost surely, 2^12439880 is an apocalyptic number.

12439880 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12439880 is an abundant number, since it is smaller than the sum of its proper divisors (15549940).

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

12439880 is a wasteful number, since it uses less digits than its factorization.

12439880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 311008 (or 311004 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 35.

The square root of 12439880 is about 3527.0214062293. The cubic root of 12439880 is about 231.7067738185.

It can be divided in two parts, 124 and 39880, that added together give a palindrome (40004).

The spelling of 12439880 in words is "twelve million, four hundred thirty-nine thousand, eight hundred eighty".