3866823 has 12 divisors (see below), whose sum is σ = 5879640. Its totient is φ = 2442096.

The previous prime is 3866809. The next prime is 3866839. The reversal of 3866823 is 3286683.

It is not a de Polignac number, because 3866823 - 2⁵ = 3866791 is a prime.

It is a super-2 number, since 2×3866823² = 29904640226658, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3866623) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11136 + ... + 11477.

It is an arithmetic number, because the mean of its divisors is an integer number (489970).

Almost surely, 2^3866823 is an apocalyptic number.

3866823 is a deficient number, since it is larger than the sum of its proper divisors (2012817).

3866823 is a wasteful number, since it uses less digits than its factorization.

3866823 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22638 (or 22635 counting only the distinct ones).

The product of its digits is 41472, while the sum is 36.

The square root of 3866823 is about 1966.4239115715. The cubic root of 3866823 is about 156.9584727958.

The spelling of 3866823 in words is "three million, eight hundred sixty-six thousand, eight hundred twenty-three".