3856917 has 8 divisors (see below), whose sum is σ = 5281696. Its totient is φ = 2501712.

The previous prime is 3856907. The next prime is 3856921. The reversal of 3856917 is 7196583.

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

It is not a de Polignac number, because 3856917 - 2⁸ = 3856661 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3856907) 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, 17263 + ... + 17484.

It is an arithmetic number, because the mean of its divisors is an integer number (660212).

Almost surely, 2^3856917 is an apocalyptic number.

3856917 is a gapful number since it is divisible by the number (37) formed by its first and last digit.

It is an amenable number.

3856917 is a deficient number, since it is larger than the sum of its proper divisors (1424779).

3856917 is a wasteful number, since it uses less digits than its factorization.

3856917 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34787.

The product of its digits is 45360, while the sum is 39.

The square root of 3856917 is about 1963.9035108681. The cubic root of 3856917 is about 156.8243264744.

The spelling of 3856917 in words is "three million, eight hundred fifty-six thousand, nine hundred seventeen".