3944219 has 2 divisors, whose sum is σ = 3944220. Its totient is φ = 3944218.

The previous prime is 3944189. The next prime is 3944231. The reversal of 3944219 is 9124493.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 3944219 - 2²⁰ = 2895643 is a prime.

It is a super-2 number, since 2×3944219² = 31113727039922, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (3944249) 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 as a sum of consecutive naturals, namely, 1972109 + 1972110.

It is an arithmetic number, because the mean of its divisors is an integer number (1972110).

Almost surely, 2^3944219 is an apocalyptic number.

3944219 is a deficient number, since it is larger than the sum of its proper divisors (1).

3944219 is an equidigital number, since it uses as much as digits as its factorization.

3944219 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7776, while the sum is 32.

The square root of 3944219 is about 1986.0057905253. The cubic root of 3944219 is about 157.9987582021.

The spelling of 3944219 in words is "three million, nine hundred forty-four thousand, two hundred nineteen".