86939 has 2 divisors, whose sum is σ = 86940.
Its totient is φ = 86938.
The previous prime is 86929. The next prime is 86951. The reversal of 86939 is 93968.
It is a weak prime.
It is a cyclic number.
It is not a de Polignac number, because 86939 - 24 = 86923 is a prime.
It is a Chen prime.
It is a junction number, because it is equal to n+sod(n) for n = 86899 and 86908.
It is not a weakly prime, because it can be changed into another prime (86929) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43469 + 43470.
It is an arithmetic number, because the mean of its divisors is an integer number (43470).
286939 is an apocalyptic number.
86939 is a deficient number, since it is larger than the sum of its proper divisors (1).
86939 is an equidigital number, since it uses as much as digits as its factorization.
86939 is an evil number, because the sum of its binary digits is even.
The product of its digits is 11664, while the sum is 35.
The square root of 86939 is about 294.8542012589.
The cubic root of 86939 is about 44.3001177073.
The spelling of 86939 in words is "eighty-six thousand, nine hundred thirty-nine".