3856493 has 6 divisors (see below), whose sum is σ = 3985902. Its totient is φ = 3731160.

The previous prime is 3856477. The next prime is 3856499. The reversal of 3856493 is 3946583.

It can be written as a sum of positive squares in only one way, i.e., 3694084 + 162409 = 1922^2 + 403^2 .

It is not a de Polignac number, because 3856493 - 2⁴ = 3856477 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3856499) 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 5 ways as a sum of consecutive naturals, for example, 1046 + ... + 2967.

It is an arithmetic number, because the mean of its divisors is an integer number (664317).

Almost surely, 2^3856493 is an apocalyptic number.

It is an amenable number.

3856493 is a deficient number, since it is larger than the sum of its proper divisors (129409).

3856493 is an equidigital number, since it uses as much as digits as its factorization.

3856493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4075 (or 4044 counting only the distinct ones).

The product of its digits is 77760, while the sum is 38.

The square root of 3856493 is about 1963.7955596243. The cubic root of 3856493 is about 156.8185795742.

The spelling of 3856493 in words is "three million, eight hundred fifty-six thousand, four hundred ninety-three".