12339440387 has 4 divisors (see below), whose sum is σ = 12339670200. Its totient is φ = 12339210576.

The previous prime is 12339440371. The next prime is 12339440413. The reversal of 12339440387 is 78304493321.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 78304493321 = 509 ⋅153839869.

It is a cyclic number.

It is not a de Polignac number, because 12339440387 - 2⁴ = 12339440371 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12339442387) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13364 + ... + 157662.

It is an arithmetic number, because the mean of its divisors is an integer number (3084917550).

Almost surely, 2^12339440387 is an apocalyptic number.

12339440387 is a deficient number, since it is larger than the sum of its proper divisors (229813).

12339440387 is an equidigital number, since it uses as much as digits as its factorization.

12339440387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 229812.

The product of its (nonzero) digits is 435456, while the sum is 44.

The spelling of 12339440387 in words is "twelve billion, three hundred thirty-nine million, four hundred forty thousand, three hundred eighty-seven".