86441 has 2 divisors, whose sum is σ = 86442.
Its totient is φ = 86440.
The previous prime is 86423. The next prime is 86453. The reversal of 86441 is 14468.
It is a happy number.
It is a strong prime.
It can be written as a sum of positive squares in only one way, i.e., 75625 + 10816 = 275^2 + 104^2
It is a cyclic number.
It is a de Polignac number, because none of the positive numbers 2k-86441 is a prime.
It is a Sophie Germain prime.
It is a Curzon number.
It is a nialpdrome in base 10.
It is not a weakly prime, because it can be changed into another prime (86461) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43220 + 43221.
It is an arithmetic number, because the mean of its divisors is an integer number (43221).
286441 is an apocalyptic number.
It is an amenable number.
86441 is a deficient number, since it is larger than the sum of its proper divisors (1).
86441 is an equidigital number, since it uses as much as digits as its factorization.
86441 is an evil number, because the sum of its binary digits is even.
The product of its digits is 768, while the sum is 23.
The square root of 86441 is about 294.0085032784.
The cubic root of 86441 is about 44.2153697154.
The spelling of 86441 in words is "eighty-six thousand, four hundred forty-one".