3856387 has 8 divisors (see below), whose sum is σ = 4064256. Its totient is φ = 3651912.

The previous prime is 3856381. The next prime is 3856393. The reversal of 3856387 is 7836583.

It is an interprime number because it is at equal distance from previous prime (3856381) and next prime (3856393).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 3856387 - 2³ = 3856379 is a prime.

It is a super-3 number, since 3×3856387³ (a number of 21 digits) contains 333 as substring.

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

It is a Duffinian number.

3856387 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (3856381) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1678 + ... + 3244.

It is an arithmetic number, because the mean of its divisors is an integer number (508032).

Almost surely, 2^3856387 is an apocalyptic number.

3856387 is a deficient number, since it is larger than the sum of its proper divisors (207869).

3856387 is a wasteful number, since it uses less digits than its factorization.

3856387 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1697.

The product of its digits is 120960, while the sum is 40.

The square root of 3856387 is about 1963.7685708861. The cubic root of 3856387 is about 156.8171427833.

The spelling of 3856387 in words is "three million, eight hundred fifty-six thousand, three hundred eighty-seven".