3859985 has 4 divisors (see below), whose sum is σ = 4631988. Its totient is φ = 3087984.

The previous prime is 3859979. The next prime is 3859993. The reversal of 3859985 is 5899583.

3859985 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, and also an emirpimes, since its reverse is a distinct semiprime: 5899583 = 1399 ⋅4217.

It can be written as a sum of positive squares in 2 ways, for example, as 677329 + 3182656 = 823^2 + 1784^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3859985 is a prime.

It is a Duffinian 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, 385994 + ... + 386003.

It is an arithmetic number, because the mean of its divisors is an integer number (1157997).

Almost surely, 2^3859985 is an apocalyptic number.

It is an amenable number.

3859985 is a deficient number, since it is larger than the sum of its proper divisors (772003).

3859985 is an equidigital number, since it uses as much as digits as its factorization.

3859985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 772002.

The product of its digits is 388800, while the sum is 47.

The square root of 3859985 is about 1964.6844530357. The cubic root of 3859985 is about 156.8658976322.

The spelling of 3859985 in words is "three million, eight hundred fifty-nine thousand, nine hundred eighty-five".