4444729664 has 14 divisors (see below), whose sum is σ = 8820010554. Its totient is φ = 2222364800.

The previous prime is 4444729661. The next prime is 4444729693. The reversal of 4444729664 is 4669274444.

It can be written as a sum of positive squares in only one way, i.e., 2561169664 + 1883560000 = 50608^2 + 43400^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4444729661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34724387 + ... + 34724514.

Almost surely, 2^4444729664 is an apocalyptic number.

It is an amenable number.

4444729664 is a deficient number, since it is larger than the sum of its proper divisors (4375280890).

4444729664 is an equidigital number, since it uses as much as digits as its factorization.

4444729664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69448913 (or 69448903 counting only the distinct ones).

The product of its digits is 4644864, while the sum is 50.

The square root of 4444729664 is about 66668.8057790148. The cubic root of 4444729664 is about 1644.1765527302.

The spelling of 4444729664 in words is "four billion, four hundred forty-four million, seven hundred twenty-nine thousand, six hundred sixty-four".