239216871 has 4 divisors (see below), whose sum is σ = 318955832. Its totient is φ = 159477912.

The previous prime is 239216851. The next prime is 239216881. The reversal of 239216871 is 178612932.

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

It is not a de Polignac number, because 239216871 - 2⁷ = 239216743 is a prime.

It is a super-2 number, since 2×239216871² = 114449422742061282, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (239216851) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39869476 + ... + 39869481.

It is an arithmetic number, because the mean of its divisors is an integer number (79738958).

Almost surely, 2^239216871 is an apocalyptic number.

239216871 is a deficient number, since it is larger than the sum of its proper divisors (79738961).

239216871 is an equidigital number, since it uses as much as digits as its factorization.

239216871 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79738960.

The product of its digits is 36288, while the sum is 39.

The square root of 239216871 is about 15466.6373527021. The cubic root of 239216871 is about 620.7698302428.

The spelling of 239216871 in words is "two hundred thirty-nine million, two hundred sixteen thousand, eight hundred seventy-one".