3884643 has 24 divisors (see below), whose sum is σ = 6465888. Its totient is φ = 2201472.

The previous prime is 3884609. The next prime is 3884659. The reversal of 3884643 is 3464883.

3884643 is a `hidden beast` number, since 3 + 8 + 8 + 4 + 643 = 666.

It is not a de Polignac number, because 3884643 - 2⁹ = 3884131 is a prime.

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 3884598 and 3884607.

It is not an unprimeable number, because it can be changed into a prime (3884693) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12255 + ... + 12567.

It is an arithmetic number, because the mean of its divisors is an integer number (269412).

Almost surely, 2^3884643 is an apocalyptic number.

3884643 is a deficient number, since it is larger than the sum of its proper divisors (2581245).

3884643 is a wasteful number, since it uses less digits than its factorization.

3884643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 523 (or 520 counting only the distinct ones).

The product of its digits is 55296, while the sum is 36.

The square root of 3884643 is about 1970.9497710495. The cubic root of 3884643 is about 157.1992142998.

It can be divided in two parts, 38 and 84643, that added together give a square (84681 = 291²).

The spelling of 3884643 in words is "three million, eight hundred eighty-four thousand, six hundred forty-three".