386839 has 2 divisors, whose sum is σ = 386840. Its totient is φ = 386838.

The previous prime is 386809. The next prime is 386851. The reversal of 386839 is 938683.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 386839 - 2¹⁷ = 255767 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 386798 and 386807.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (386809) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 193419 + 193420.

It is an arithmetic number, because the mean of its divisors is an integer number (193420).

2³⁸⁶⁸³⁹ is an apocalyptic number.

386839 is a deficient number, since it is larger than the sum of its proper divisors (1).

386839 is an equidigital number, since it uses as much as digits as its factorization.

386839 is an evil number, because the sum of its binary digits is even.

The product of its digits is 31104, while the sum is 37.

The square root of 386839 is about 621.9638253146. The cubic root of 386839 is about 72.8635092659.

It can be divided in two parts, 386 and 839, that added together give a triangular number (1225 = T₄₉).

The spelling of 386839 in words is "three hundred eighty-six thousand, eight hundred thirty-nine".