3869966 has 4 divisors (see below), whose sum is σ = 5804952. Its totient is φ = 1934982.

The previous prime is 3869959. The next prime is 3869989. The reversal of 3869966 is 6699683.

3869966 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 6699683 = 17 ⋅394099.

It is a self number, because there is not a number n which added to its sum of digits gives 3869966.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 967490 + ... + 967493.

It is an arithmetic number, because the mean of its divisors is an integer number (1451238).

Almost surely, 2^3869966 is an apocalyptic number.

3869966 is a deficient number, since it is larger than the sum of its proper divisors (1934986).

3869966 is a wasteful number, since it uses less digits than its factorization.

3869966 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1934985.

The product of its digits is 419904, while the sum is 47.

The square root of 3869966 is about 1967.2229156860. Note that the first 3 decimals coincide. The cubic root of 3869966 is about 157.0009871873. Note that the first 3 decimals are identical.

The spelling of 3869966 in words is "three million, eight hundred sixty-nine thousand, nine hundred sixty-six".