4446624464 has 10 divisors (see below), whose sum is σ = 8615334930. Its totient is φ = 2223312224.

The previous prime is 4446624437. The next prime is 4446624521. The reversal of 4446624464 is 4644266444.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 2370910864 + 2075713600 = 48692^2 + 45560^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 138956999 + ... + 138957030.

It is an arithmetic number, because the mean of its divisors is an integer number (861533493).

Almost surely, 2^4446624464 is an apocalyptic number.

It is an amenable number.

4446624464 is a deficient number, since it is larger than the sum of its proper divisors (4168710466).

4446624464 is a wasteful number, since it uses less digits than its factorization.

4446624464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 277914037 (or 277914031 counting only the distinct ones).

The product of its digits is 1769472, while the sum is 44.

The square root of 4446624464 is about 66683.0148088702. The cubic root of 4446624464 is about 1644.4101584741.

The spelling of 4446624464 in words is "four billion, four hundred forty-six million, six hundred twenty-four thousand, four hundred sixty-four".