444668544 has 48 divisors (see below), whose sum is σ = 1279583370. Its totient is φ = 148222464.

The previous prime is 444668537. The next prime is 444668611. The reversal of 444668544 is 445866444.

444668544 is a `hidden beast` number, since 4 + 4 + 46 + 68 + 544 = 666.

It can be written as a sum of positive squares in only one way, i.e., 428986944 + 15681600 = 20712^2 + 3960^2 .

It is a tau number, because it is divible by the number of its divisors (48).

It is a super-2 number, since 2×444668544² = 395460228046159872, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 444668544.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 191847 + ... + 194150.

Almost surely, 2^444668544 is an apocalyptic number.

It is an amenable number.

444668544 is an abundant number, since it is smaller than the sum of its proper divisors (834914826).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

444668544 is a wasteful number, since it uses less digits than its factorization.

444668544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 386017 (or 386002 counting only the distinct ones).

The product of its digits is 1474560, while the sum is 45.

The square root of 444668544 is about 21087.1653856084. The cubic root of 444668544 is about 763.2710717933.

The spelling of 444668544 in words is "four hundred forty-four million, six hundred sixty-eight thousand, five hundred forty-four".