3856149 has 18 divisors (see below), whose sum is σ = 6124118. Its totient is φ = 2336400.

The previous prime is 3856147. The next prime is 3856187. The reversal of 3856149 is 9416583.

3856149 is a `hidden beast` number, since 38 + 5 + 614 + 9 = 666.

It can be written as a sum of positive squares in only one way, i.e., 3175524 + 680625 = 1782^2 + 825^2 .

It is not a de Polignac number, because 3856149 - 2¹ = 3856147 is a prime.

It is a super-2 number, since 2×3856149² = 29739770220402, which contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3856141) 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 17 ways as a sum of consecutive naturals, for example, 682 + ... + 2859.

Almost surely, 2^3856149 is an apocalyptic number.

It is an amenable number.

3856149 is a deficient number, since it is larger than the sum of its proper divisors (2267969).

3856149 is a wasteful number, since it uses less digits than its factorization.

3856149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3569 (or 3555 counting only the distinct ones).

The product of its digits is 25920, while the sum is 36.

The square root of 3856149 is about 1963.7079721792. The cubic root of 3856149 is about 156.8139166853.

It can be divided in two parts, 3856 and 149, that added together give a triangular number (4005 = T₈₉).

The spelling of 3856149 in words is "three million, eight hundred fifty-six thousand, one hundred forty-nine".