238197839 has 8 divisors (see below), whose sum is σ = 259975632. Its totient is φ = 216440640.

The previous prime is 238197811. The next prime is 238197853. The reversal of 238197839 is 938791832.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 238197839 - 2¹² = 238193743 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 (238197859) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28817 + ... + 36149.

It is an arithmetic number, because the mean of its divisors is an integer number (32496954).

Almost surely, 2^238197839 is an apocalyptic number.

238197839 is a deficient number, since it is larger than the sum of its proper divisors (21777793).

238197839 is a wasteful number, since it uses less digits than its factorization.

238197839 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10297.

The product of its digits is 653184, while the sum is 50.

The square root of 238197839 is about 15433.6592874146. The cubic root of 238197839 is about 619.8871100393.

The spelling of 238197839 in words is "two hundred thirty-eight million, one hundred ninety-seven thousand, eight hundred thirty-nine".