3849985 has 4 divisors (see below), whose sum is σ = 4619988. Its totient is φ = 3079984.

The previous prime is 3849977. The next prime is 3849997. The reversal of 3849985 is 5899483.

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 2214144 + 1635841 = 1488^2 + 1279^2 .

It is a cyclic number.

It is not a de Polignac number, because 3849985 - 2³ = 3849977 is a prime.

It is an Ulam number.

It is a Duffinian number.

3849985 is a lucky number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 384994 + ... + 385003.

It is an arithmetic number, because the mean of its divisors is an integer number (1154997).

Almost surely, 2^3849985 is an apocalyptic number.

It is an amenable number.

3849985 is a deficient number, since it is larger than the sum of its proper divisors (770003).

3849985 is an equidigital number, since it uses as much as digits as its factorization.

3849985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 770002.

The product of its digits is 311040, while the sum is 46.

The square root of 3849985 is about 1962.1378646772. The cubic root of 3849985 is about 156.7303171777.

It can be divided in two parts, 384998 and 5, that added together give a triangular number (385003 = T₈₇₇).

The spelling of 3849985 in words is "three million, eight hundred forty-nine thousand, nine hundred eighty-five".