86929 has 2 divisors, whose sum is σ = 86930.
Its totient is φ = 86928.
The previous prime is 86927. The next prime is 86939. The reversal of 86929 is 92968.
It is a weak prime.
It can be written as a sum of positive squares in only one way, i.e., 65025 + 21904 = 255^2 + 148^2
It is a cyclic number.
It is not a de Polignac number, because 86929 - 21 = 86927 is a prime.
Together with 86927, it forms a pair of twin primes.
86929 is a lucky number.
It is a junction number, because it is equal to n+sod(n) for n = 86894 and 86903.
It is not a weakly prime, because it can be changed into another prime (86923) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43464 + 43465.
It is an arithmetic number, because the mean of its divisors is an integer number (43465).
286929 is an apocalyptic number.
It is an amenable number.
86929 is a deficient number, since it is larger than the sum of its proper divisors (1).
86929 is an equidigital number, since it uses as much as digits as its factorization.
86929 is an evil number, because the sum of its binary digits is even.
The product of its digits is 7776, while the sum is 34.
The square root of 86929 is about 294.8372432377.
The cubic root of 86929 is about 44.2984191287.
It can be divided in two parts, 869 and 29, that added together give a palindrome (898).
The spelling of 86929 in words is "eighty-six thousand, nine hundred twenty-nine".