239117243 has 2 divisors, whose sum is σ = 239117244. Its totient is φ = 239117242.

The previous prime is 239117237. The next prime is 239117297. The reversal of 239117243 is 342711932.

239117243 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 239117243 - 2²⁰ = 238068667 is a prime.

It is not a weakly prime, because it can be changed into another prime (239117443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 119558621 + 119558622.

It is an arithmetic number, because the mean of its divisors is an integer number (119558622).

Almost surely, 2^239117243 is an apocalyptic number.

239117243 is a deficient number, since it is larger than the sum of its proper divisors (1).

239117243 is an equidigital number, since it uses as much as digits as its factorization.

239117243 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9072, while the sum is 32.

The square root of 239117243 is about 15463.4162784296. The cubic root of 239117243 is about 620.6836397717.

The spelling of 239117243 in words is "two hundred thirty-nine million, one hundred seventeen thousand, two hundred forty-three".