3864847 has 8 divisors (see below), whose sum is σ = 4649600. Its totient is φ = 3138264.

The previous prime is 3864841. The next prime is 3864871. The reversal of 3864847 is 7484683.

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 3864847 - 2⁷ = 3864719 is a prime.

It is a Duffinian number.

3864847 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3864841) 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, 14397 + ... + 14662.

It is an arithmetic number, because the mean of its divisors is an integer number (581200).

Almost surely, 2^3864847 is an apocalyptic number.

3864847 is a deficient number, since it is larger than the sum of its proper divisors (784753).

3864847 is a wasteful number, since it uses less digits than its factorization.

3864847 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29085.

The product of its digits is 129024, while the sum is 40.

The square root of 3864847 is about 1965.9214124680. The cubic root of 3864847 is about 156.9317322573.

The spelling of 3864847 in words is "three million, eight hundred sixty-four thousand, eight hundred forty-seven".