3831866 has 4 divisors (see below), whose sum is σ = 5747802. Its totient is φ = 1915932.

The previous prime is 3831827. The next prime is 3831871. The reversal of 3831866 is 6681383.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 6681383 = 43 ⋅155381.

It can be written as a sum of positive squares in only one way, i.e., 3783025 + 48841 = 1945^2 + 221^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 957965 + ... + 957968.

Almost surely, 2^3831866 is an apocalyptic number.

3831866 is a deficient number, since it is larger than the sum of its proper divisors (1915936).

3831866 is a wasteful number, since it uses less digits than its factorization.

3831866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1915935.

The product of its digits is 20736, while the sum is 35.

The square root of 3831866 is about 1957.5152617540. The cubic root of 3831866 is about 156.4840596611.

The spelling of 3831866 in words is "three million, eight hundred thirty-one thousand, eight hundred sixty-six".