86389 has 2 divisors, whose sum is σ = 86390. Its totient is φ = 86388.

The previous prime is 86381. The next prime is 86399. The reversal of 86389 is 98368.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 52900 + 33489 = 230^2 + 183^2 .

It is a cyclic number.

It is not a de Polignac number, because 86389 - 2³ = 86381 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (86381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43194 + 43195.

It is an arithmetic number, because the mean of its divisors is an integer number (43195).

2⁸⁶³⁸⁹ is an apocalyptic number.

It is an amenable number.

86389 is a deficient number, since it is larger than the sum of its proper divisors (1).

86389 is an equidigital number, since it uses as much as digits as its factorization.

86389 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10368, while the sum is 34.

The square root of 86389 is about 293.9200571584. The cubic root of 86389 is about 44.2065017769.

The spelling of 86389 in words is "eighty-six thousand, three hundred eighty-nine".