239138901727 has 4 divisors (see below), whose sum is σ = 260878801896. Its totient is φ = 217399001560.

The previous prime is 239138901709. The next prime is 239138901763. The reversal of 239138901727 is 727109831932.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 239138901727 - 2²⁷ = 239004683999 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (239138902727) 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, 10869950068 + ... + 10869950089.

It is an arithmetic number, because the mean of its divisors is an integer number (65219700474).

Almost surely, 2^239138901727 is an apocalyptic number.

239138901727 is a deficient number, since it is larger than the sum of its proper divisors (21739900169).

239138901727 is a wasteful number, since it uses less digits than its factorization.

239138901727 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21739900168.

The product of its (nonzero) digits is 1143072, while the sum is 52.

The spelling of 239138901727 in words is "two hundred thirty-nine billion, one hundred thirty-eight million, nine hundred one thousand, seven hundred twenty-seven".