385789 has 4 divisors (see below), whose sum is σ = 387324. Its totient is φ = 384256.

The previous prime is 385783. The next prime is 385793. The reversal of 385789 is 987583.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 987583 = 419 ⋅2357.

It can be written as a sum of positive squares in 2 ways, for example, as 66564 + 319225 = 258^2 + 565^2 .

It is a cyclic number.

It is not a de Polignac number, because 385789 - 2⁷ = 385661 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (385783) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 292 + ... + 925.

It is an arithmetic number, because the mean of its divisors is an integer number (96831).

2³⁸⁵⁷⁸⁹ is an apocalyptic number.

It is an amenable number.

385789 is a deficient number, since it is larger than the sum of its proper divisors (1535).

385789 is a wasteful number, since it uses less digits than its factorization.

385789 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1534.

The product of its digits is 60480, while the sum is 40.

The square root of 385789 is about 621.1191512101. The cubic root of 385789 is about 72.7975248726.

The spelling of 385789 in words is "three hundred eighty-five thousand, seven hundred eighty-nine".