239639387 has 8 divisors (see below), whose sum is σ = 264075504. Its totient is φ = 216060768.

The previous prime is 239639371. The next prime is 239639423. The reversal of 239639387 is 783936932.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 239639387 - 2⁴ = 239639371 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (239639317) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 213788 + ... + 214905.

It is an arithmetic number, because the mean of its divisors is an integer number (33009438).

Almost surely, 2^239639387 is an apocalyptic number.

239639387 is a deficient number, since it is larger than the sum of its proper divisors (24436117).

239639387 is a wasteful number, since it uses less digits than its factorization.

239639387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 428749.

The product of its digits is 1469664, while the sum is 50.

The square root of 239639387 is about 15480.2902750562. The cubic root of 239639387 is about 621.1350928261.

The spelling of 239639387 in words is "two hundred thirty-nine million, six hundred thirty-nine thousand, three hundred eighty-seven".