3869644 has 12 divisors (see below), whose sum is σ = 7005600. Its totient is φ = 1868048.

The previous prime is 3869641. The next prime is 3869647. The reversal of 3869644 is 4469683.

It is an interprime number because it is at equal distance from previous prime (3869641) and next prime (3869647).

It is a junction number, because it is equal to n+sod(n) for n = 3869597 and 3869606.

It is not an unprimeable number, because it can be changed into a prime (3869641) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16564 + ... + 16795.

It is an arithmetic number, because the mean of its divisors is an integer number (583800).

Almost surely, 2^3869644 is an apocalyptic number.

It is an amenable number.

3869644 is a deficient number, since it is larger than the sum of its proper divisors (3135956).

3869644 is a wasteful number, since it uses less digits than its factorization.

3869644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33392 (or 33390 counting only the distinct ones).

The product of its digits is 124416, while the sum is 40.

The square root of 3869644 is about 1967.1410727246. The cubic root of 3869644 is about 156.9966326512.

The spelling of 3869644 in words is "three million, eight hundred sixty-nine thousand, six hundred forty-four".