385085 has 4 divisors (see below), whose sum is σ = 462108. Its totient is φ = 308064.

The previous prime is 385081. The next prime is 385087. The reversal of 385085 is 580583.

385085 is nontrivially palindromic in base 2.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 580583 = 19 ⋅30557.

It can be written as a sum of positive squares in 2 ways, for example, as 273529 + 111556 = 523^2 + 334^2 .

It is a cyclic number.

It is not a de Polignac number, because 385085 - 2² = 385081 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 385085.

It is not an unprimeable number, because it can be changed into a prime (385081) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38504 + ... + 38513.

It is an arithmetic number, because the mean of its divisors is an integer number (115527).

2³⁸⁵⁰⁸⁵ is an apocalyptic number.

It is an amenable number.

385085 is a deficient number, since it is larger than the sum of its proper divisors (77023).

385085 is an equidigital number, since it uses as much as digits as its factorization.

385085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77022.

The product of its (nonzero) digits is 4800, while the sum is 29.

The square root of 385085 is about 620.5521734713. The cubic root of 385085 is about 72.7532168328.

It can be divided in two parts, 3 and 85085, that multiplied together give a triangular number (255255 = T₇₁₄).

The spelling of 385085 in words is "three hundred eighty-five thousand, eighty-five".