3866219 has 4 divisors (see below), whose sum is σ = 4418544. Its totient is φ = 3313896.

The previous prime is 3866201. The next prime is 3866237. The reversal of 3866219 is 9126683.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9126683 = 89 ⋅102547.

It is an interprime number because it is at equal distance from previous prime (3866201) and next prime (3866237).

It is a cyclic number.

It is not a de Polignac number, because 3866219 - 2⁸ = 3865963 is a prime.

It is a super-2 number, since 2×3866219² = 29895298711922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3866419) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 276152 + ... + 276165.

It is an arithmetic number, because the mean of its divisors is an integer number (1104636).

Almost surely, 2^3866219 is an apocalyptic number.

3866219 is a deficient number, since it is larger than the sum of its proper divisors (552325).

3866219 is an equidigital number, since it uses as much as digits as its factorization.

3866219 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 552324.

The product of its digits is 15552, while the sum is 35.

The square root of 3866219 is about 1966.2703272948. The cubic root of 3866219 is about 156.9503000353.

The spelling of 3866219 in words is "three million, eight hundred sixty-six thousand, two hundred nineteen".