3879666 has 48 divisors (see below), whose sum is σ = 9854208. Its totient is φ = 1080000.

The previous prime is 3879641. The next prime is 3879671. The reversal of 3879666 is 6669783.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4791 + ... + 5541.

It is an arithmetic number, because the mean of its divisors is an integer number (205296).

Almost surely, 2^3879666 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3879666, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4927104).

3879666 is an abundant number, since it is smaller than the sum of its proper divisors (5974542).

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

3879666 is a wasteful number, since it uses less digits than its factorization.

3879666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 807 (or 804 counting only the distinct ones).

The product of its digits is 326592, while the sum is 45.

The square root of 3879666 is about 1969.6867771298. The cubic root of 3879666 is about 157.1320511263.

The spelling of 3879666 in words is "three million, eight hundred seventy-nine thousand, six hundred sixty-six".