3886866 has 20 divisors (see below), whose sum is σ = 8709822. Its totient is φ = 1295568.

The previous prime is 3886847. The next prime is 3886867. The reversal of 3886866 is 6686883.

It can be written as a sum of positive squares in only one way, i.e., 3884841 + 2025 = 1971^2 + 45^2 .

It is not an unprimeable number, because it can be changed into a prime (3886867) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 11835 + ... + 12158.

Almost surely, 2^3886866 is an apocalyptic number.

3886866 is an abundant number, since it is smaller than the sum of its proper divisors (4822956).

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

3886866 is a wasteful number, since it uses less digits than its factorization.

3886866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24007 (or 23998 counting only the distinct ones).

The product of its digits is 331776, while the sum is 45.

The square root of 3886866 is about 1971.5136317053. The cubic root of 3886866 is about 157.2291945079.

The spelling of 3886866 in words is "three million, eight hundred eighty-six thousand, eight hundred sixty-six".