386689 has 2 divisors, whose sum is σ = 386690. Its totient is φ = 386688.

The previous prime is 386677. The next prime is 386693. The reversal of 386689 is 986683.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 378225 + 8464 = 615^2 + 92^2 .

It is a cyclic number.

It is not a de Polignac number, because 386689 - 2¹¹ = 384641 is a prime.

It is not a weakly prime, because it can be changed into another prime (386609) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 193344 + 193345.

It is an arithmetic number, because the mean of its divisors is an integer number (193345).

2³⁸⁶⁶⁸⁹ is an apocalyptic number.

It is an amenable number.

386689 is a deficient number, since it is larger than the sum of its proper divisors (1).

386689 is an equidigital number, since it uses as much as digits as its factorization.

386689 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 62208, while the sum is 40.

The square root of 386689 is about 621.8432278316. The cubic root of 386689 is about 72.8540902403.

The spelling of 386689 in words is "three hundred eighty-six thousand, six hundred eighty-nine".