239505023 has 4 divisors (see below), whose sum is σ = 240759168. Its totient is φ = 238250880.

The previous prime is 239504999. The next prime is 239505031. The reversal of 239505023 is 320505932.

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 239505023 - 2¹⁸ = 239242879 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 (239505053) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 626786 + ... + 627167.

It is an arithmetic number, because the mean of its divisors is an integer number (60189792).

Almost surely, 2^239505023 is an apocalyptic number.

239505023 is a deficient number, since it is larger than the sum of its proper divisors (1254145).

239505023 is a wasteful number, since it uses less digits than its factorization.

239505023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1254144.

The product of its (nonzero) digits is 8100, while the sum is 29.

The square root of 239505023 is about 15475.9498254550. The cubic root of 239505023 is about 621.0189825327.

The spelling of 239505023 in words is "two hundred thirty-nine million, five hundred five thousand, twenty-three".