3866984 has 16 divisors (see below), whose sum is σ = 7909920. Its totient is φ = 1757680.

The previous prime is 3866983. The next prime is 3867001. The reversal of 3866984 is 4896683.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is not an unprimeable number, because it can be changed into a prime (3866983) 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, 21884 + ... + 22059.

It is an arithmetic number, because the mean of its divisors is an integer number (494370).

Almost surely, 2^3866984 is an apocalyptic number.

It is an amenable number.

3866984 is an abundant number, since it is smaller than the sum of its proper divisors (4042936).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3866984 is a wasteful number, since it uses less digits than its factorization.

3866984 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43960 (or 43956 counting only the distinct ones).

The product of its digits is 248832, while the sum is 44.

The square root of 3866984 is about 1966.4648484018. The cubic root of 3866984 is about 156.9606511528.

The spelling of 3866984 in words is "three million, eight hundred sixty-six thousand, nine hundred eighty-four".