12239280387 has 54 divisors (see below), whose sum is σ = 18856991244. Its totient is φ = 7933026600.

The previous prime is 12239280359. The next prime is 12239280491. The reversal of 12239280387 is 78308293221.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

12239280387 is a `hidden beast` number, since 12 + 239 + 28 + 0 + 387 = 666.

It is not a de Polignac number, because 12239280387 - 2¹⁸ = 12239018243 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12239480387) by changing a digit.

It is a polite number, since it can be written in 53 ways as a sum of consecutive naturals, for example, 81054762 + ... + 81054912.

Almost surely, 2^12239280387 is an apocalyptic number.

12239280387 is a deficient number, since it is larger than the sum of its proper divisors (6617710857).

12239280387 is an frugal number, since it uses more digits than its factorization.

12239280387 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 411 (or 201 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 45.

The spelling of 12239280387 in words is "twelve billion, two hundred thirty-nine million, two hundred eighty thousand, three hundred eighty-seven".