239289047 has 4 divisors (see below), whose sum is σ = 239364216. Its totient is φ = 239213880.

The previous prime is 239289013. The next prime is 239289077. The reversal of 239289047 is 740982932.

239289047 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 239289047 - 2¹² = 239284951 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 239288989 and 239289007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (239289077) 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, 32588 + ... + 39249.

It is an arithmetic number, because the mean of its divisors is an integer number (59841054).

Almost surely, 2^239289047 is an apocalyptic number.

239289047 is a deficient number, since it is larger than the sum of its proper divisors (75169).

239289047 is an equidigital number, since it uses as much as digits as its factorization.

239289047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75168.

The product of its (nonzero) digits is 217728, while the sum is 44.

The square root of 239289047 is about 15468.9704570149. The cubic root of 239289047 is about 620.8322564110.

The spelling of 239289047 in words is "two hundred thirty-nine million, two hundred eighty-nine thousand, forty-seven".