3966224 has 10 divisors (see below), whose sum is σ = 7684590. Its totient is φ = 1983104.

The previous prime is 3966223. The next prime is 3966229. The reversal of 3966224 is 4226693.

It can be written as a sum of positive squares in only one way, i.e., 3097600 + 868624 = 1760^2 + 932^2 .

It is not an unprimeable number, because it can be changed into a prime (3966223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 123929 + ... + 123960.

It is an arithmetic number, because the mean of its divisors is an integer number (768459).

Almost surely, 2^3966224 is an apocalyptic number.

It is an amenable number.

3966224 is a deficient number, since it is larger than the sum of its proper divisors (3718366).

3966224 is a wasteful number, since it uses less digits than its factorization.

3966224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 247897 (or 247891 counting only the distinct ones).

The product of its digits is 15552, while the sum is 32.

The square root of 3966224 is about 1991.5380990581. The cubic root of 3966224 is about 158.2920411867.

The spelling of 3966224 in words is "three million, nine hundred sixty-six thousand, two hundred twenty-four".