3820085 has 4 divisors (see below), whose sum is σ = 4584108. Its totient is φ = 3056064.

The previous prime is 3820067. The next prime is 3820097. The reversal of 3820085 is 5800283.

3820085 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 485809 + 3334276 = 697^2 + 1826^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3820085 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 382004 + ... + 382013.

It is an arithmetic number, because the mean of its divisors is an integer number (1146027).

Almost surely, 2^3820085 is an apocalyptic number.

It is an amenable number.

3820085 is a deficient number, since it is larger than the sum of its proper divisors (764023).

3820085 is an equidigital number, since it uses as much as digits as its factorization.

3820085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 764022.

The product of its (nonzero) digits is 1920, while the sum is 26.

The square root of 3820085 is about 1954.5037733399. The cubic root of 3820085 is about 156.3235259291.

It can be divided in two parts, 38 and 20085, that multiplied together give a triangular number (763230 = T₁₂₃₅).

The spelling of 3820085 in words is "three million, eight hundred twenty thousand, eighty-five".