239867639009 has 8 divisors (see below), whose sum is σ = 252267509760. Its totient is φ = 227632005216.

The previous prime is 239867638993. The next prime is 239867639027. The reversal of 239867639009 is 900936768932.

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 239867639009 - 2⁴ = 239867638993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (239867639059) 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, 41056244 + ... + 41062085.

It is an arithmetic number, because the mean of its divisors is an integer number (31533438720).

Almost surely, 2^239867639009 is an apocalyptic number.

It is an amenable number.

239867639009 is a deficient number, since it is larger than the sum of its proper divisors (12399870751).

239867639009 is a wasteful number, since it uses less digits than its factorization.

239867639009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82118479.

The product of its (nonzero) digits is 26453952, while the sum is 62.

The spelling of 239867639009 in words is "two hundred thirty-nine billion, eight hundred sixty-seven million, six hundred thirty-nine thousand, nine".