3895866 has 24 divisors (see below), whose sum is σ = 9090900. Its totient is φ = 1198656.

The previous prime is 3895847. The next prime is 3895867. The reversal of 3895866 is 6685983.

It can be written as a sum of positive squares in 2 ways, for example, as 3884841 + 11025 = 1971^2 + 105^2 .

It is not an unprimeable number, because it can be changed into a prime (3895867) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 8091 + ... + 8558.

Almost surely, 2^3895866 is an apocalyptic number.

3895866 is an abundant number, since it is smaller than the sum of its proper divisors (5195034).

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

3895866 is a wasteful number, since it uses less digits than its factorization.

3895866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16670 (or 16667 counting only the distinct ones).

The product of its digits is 311040, while the sum is 45.

The square root of 3895866 is about 1973.7948221636. The cubic root of 3895866 is about 157.3504551812.

It can be divided in two parts, 3895 and 866, that added together give a square (4761 = 69²).

The spelling of 3895866 in words is "three million, eight hundred ninety-five thousand, eight hundred sixty-six".