44440448978689 has 9 divisors (see below), whose sum is σ = 44945990381443. Its totient is φ = 43940531450992.

The previous prime is 44440448978647. The next prime is 44440448978719. The reversal of 44440448978689 is 98687984404444.

The square root of 44440448978689 is 6666367.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 8533508761089 + 35906940217600 = 2921217^2 + 5992240^2 .

It is not a de Polignac number, because 44440448978689 - 2²³ = 44440440590081 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (44440448978489) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 593269212 + ... + 593344114.

Almost surely, 2^{44440448978689} is an apocalyptic number.

44440448978689 is the 6666367-th square number.

44440448978689 is the 3333184-th centered octagonal number.

It is an amenable number.

44440448978689 is a deficient number, since it is larger than the sum of its proper divisors (505541402754).

44440448978689 is an frugal number, since it uses more digits than its factorization.

44440448978689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149984 (or 74992 counting only the distinct ones).

The product of its (nonzero) digits is 7134511104, while the sum is 79.

The spelling of 44440448978689 in words is "forty-four trillion, four hundred forty billion, four hundred forty-eight million, nine hundred seventy-eight thousand, six hundred eighty-nine".