12239844435 has 144 divisors (see below), whose sum is σ = 26870747904. Its totient is φ = 5043886848.

The previous prime is 12239844389. The next prime is 12239844457. The reversal of 12239844435 is 53444893221.

12239844435 is a `hidden beast` number, since 122 + 3 + 9 + 84 + 443 + 5 = 666.

12239844435 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12239844435 - 2⁷ = 12239844307 is a prime.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 2286432 + ... + 2291778.

It is an arithmetic number, because the mean of its divisors is an integer number (186602416).

Almost surely, 2^12239844435 is an apocalyptic number.

12239844435 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

12239844435 is an abundant number, since it is smaller than the sum of its proper divisors (14630903469).

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

12239844435 is a wasteful number, since it uses less digits than its factorization.

12239844435 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5434 (or 5418 counting only the distinct ones).

The product of its digits is 829440, while the sum is 45.

The spelling of 12239844435 in words is "twelve billion, two hundred thirty-nine million, eight hundred forty-four thousand, four hundred thirty-five".