4444664447 has 2 divisors, whose sum is σ = 4444664448. Its totient is φ = 4444664446.

The previous prime is 4444664443. The next prime is 4444664449. The reversal of 4444664447 is 7444664444.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 4444664447 - 2² = 4444664443 is a prime.

Together with 4444664449, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4444664443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2222332223 + 2222332224.

It is an arithmetic number, because the mean of its divisors is an integer number (2222332224).

Almost surely, 2^4444664447 is an apocalyptic number.

4444664447 is a deficient number, since it is larger than the sum of its proper divisors (1).

4444664447 is an equidigital number, since it uses as much as digits as its factorization.

4444664447 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4128768, while the sum is 47.

The square root of 4444664447 is about 66668.3166654146. The cubic root of 4444664447 is about 1644.1685110873.

The spelling of 4444664447 in words is "four billion, four hundred forty-four million, six hundred sixty-four thousand, four hundred forty-seven".