239389 has 2 divisors, whose sum is σ = 239390. Its totient is φ = 239388.
The previous prime is 239387. The next prime is 239417. The reversal of 239389 is 983932.
It is a weak prime.
It can be written as a sum of positive squares in only one way, i.e., 168100 + 71289 = 410^2 + 267^2 .
It is a cyclic number.
It is not a de Polignac number, because 239389 - 21 = 239387 is a prime.
Together with 239387, it forms a pair of twin primes.
It is a nialpdrome in base 12.
It is a congruent number.
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, 119694 + 119695.
It is an arithmetic number, because the mean of its divisors is an integer number (119695).
2239389 is an apocalyptic number.
It is an amenable number.
239389 is a deficient number, since it is larger than the sum of its proper divisors (1).
239389 is an equidigital number, since it uses as much as digits as its factorization.
239389 is an odious number, because the sum of its binary digits is odd.
The product of its digits is 11664, while the sum is 34.
The square root of 239389 is about 489.2739518920. The cubic root of 239389 is about 62.0918686622.
The spelling of 239389 in words is "two hundred thirty-nine thousand, three hundred eighty-nine".
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