238234839 has 4 divisors (see below), whose sum is σ = 317646456. Its totient is φ = 158823224.

The previous prime is 238234831. The next prime is 238234847. The reversal of 238234839 is 938432832.

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

It is an interprime number because it is at equal distance from previous prime (238234831) and next prime (238234847).

It is a cyclic number.

It is not a de Polignac number, because 238234839 - 2³ = 238234831 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 238234839.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (238234831) 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, 39705804 + ... + 39705809.

It is an arithmetic number, because the mean of its divisors is an integer number (79411614).

Almost surely, 2^238234839 is an apocalyptic number.

238234839 is a deficient number, since it is larger than the sum of its proper divisors (79411617).

238234839 is an equidigital number, since it uses as much as digits as its factorization.

238234839 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79411616.

The product of its digits is 248832, while the sum is 42.

The square root of 238234839 is about 15434.8579196571. The cubic root of 238234839 is about 619.9192046988.

The spelling of 238234839 in words is "two hundred thirty-eight million, two hundred thirty-four thousand, eight hundred thirty-nine".