3866243 has 2 divisors, whose sum is σ = 3866244. Its totient is φ = 3866242.

The previous prime is 3866237. The next prime is 3866263. The reversal of 3866243 is 3426683.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 3866243 - 2¹² = 3862147 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (3866263) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1933121 + 1933122.

It is an arithmetic number, because the mean of its divisors is an integer number (1933122).

Almost surely, 2^3866243 is an apocalyptic number.

3866243 is a deficient number, since it is larger than the sum of its proper divisors (1).

3866243 is an equidigital number, since it uses as much as digits as its factorization.

3866243 is an evil number, because the sum of its binary digits is even.

The product of its digits is 20736, while the sum is 32.

The square root of 3866243 is about 1966.2764302102. The cubic root of 3866243 is about 156.9506247970.

The spelling of 3866243 in words is "three million, eight hundred sixty-six thousand, two hundred forty-three".