3899566 has 16 divisors (see below), whose sum is σ = 6427440. Its totient is φ = 1759680.

The previous prime is 3899549. The next prime is 3899569. The reversal of 3899566 is 6659983.

3899566 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×3899566² = 30413229976712, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3899569) by changing a digit.

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 in 7 ways as a sum of consecutive naturals, for example, 2890 + ... + 4018.

It is an arithmetic number, because the mean of its divisors is an integer number (401715).

Almost surely, 2^3899566 is an apocalyptic number.

3899566 is a deficient number, since it is larger than the sum of its proper divisors (2527874).

3899566 is a wasteful number, since it uses less digits than its factorization.

3899566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1299.

The product of its digits is 349920, while the sum is 46.

The square root of 3899566 is about 1974.7318805347. The cubic root of 3899566 is about 157.4002526223.

It can be divided in two parts, 3899 and 566, that added together give a triangular number (4465 = T₉₄).

The spelling of 3899566 in words is "three million, eight hundred ninety-nine thousand, five hundred sixty-six".