239387 has 2 divisors, whose sum is σ = 239388. Its totient is φ = 239386.

The previous prime is 239383. The next prime is 239389. The reversal of 239387 is 783932.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 239387 - 2² = 239383 is a prime.

It is a super-2 number, since 2×239387² = 114612271538, which contains 22 as substring.

Together with 239389, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (239383) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 119693 + 119694.

It is an arithmetic number, because the mean of its divisors is an integer number (119694).

2²³⁹³⁸⁷ is an apocalyptic number.

239387 is a deficient number, since it is larger than the sum of its proper divisors (1).

239387 is an equidigital number, since it uses as much as digits as its factorization.

239387 is an odious number, because the sum of its binary digits is odd.

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

The square root of 239387 is about 489.2719080430. The cubic root of 239387 is about 62.0916957441.

It can be divided in two parts, 239 and 387, that added together give a palindrome (626).

The spelling of 239387 in words is "two hundred thirty-nine thousand, three hundred eighty-seven".