3220447 has 2 divisors, whose sum is σ = 3220448. Its totient is φ = 3220446.

The previous prime is 3220433. The next prime is 3220453. The reversal of 3220447 is 7440223.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 3220447 - 2⁷ = 3220319 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3224447) 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, 1610223 + 1610224.

It is an arithmetic number, because the mean of its divisors is an integer number (1610224).

Almost surely, 2^3220447 is an apocalyptic number.

3220447 is a deficient number, since it is larger than the sum of its proper divisors (1).

3220447 is an equidigital number, since it uses as much as digits as its factorization.

3220447 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1344, while the sum is 22.

The square root of 3220447 is about 1794.5603918509. The cubic root of 3220447 is about 147.6744579442.

The spelling of 3220447 in words is "three million, two hundred twenty thousand, four hundred forty-seven".