239822381 has 2 divisors, whose sum is σ = 239822382. Its totient is φ = 239822380.

The previous prime is 239822371. The next prime is 239822491. The reversal of 239822381 is 183228932.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 226021156 + 13801225 = 15034^2 + 3715^2 .

It is a cyclic number.

It is not a de Polignac number, because 239822381 - 2²⁶ = 172713517 is a prime.

It is a super-2 number, since 2×239822381² = 115029548857018322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (239822321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 119911190 + 119911191.

It is an arithmetic number, because the mean of its divisors is an integer number (119911191).

Almost surely, 2^239822381 is an apocalyptic number.

It is an amenable number.

239822381 is a deficient number, since it is larger than the sum of its proper divisors (1).

239822381 is an equidigital number, since it uses as much as digits as its factorization.

239822381 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 41472, while the sum is 38.

The square root of 239822381 is about 15486.1996952125. The cubic root of 239822381 is about 621.2931568193.

The spelling of 239822381 in words is "two hundred thirty-nine million, eight hundred twenty-two thousand, three hundred eighty-one".