44397663489 has 128 divisors (see below), whose sum is σ = 72495360000. Its totient is φ = 26762814720.

The previous prime is 44397663469. The next prime is 44397663491. The reversal of 44397663489 is 98436679344.

44397663489 is a `hidden beast` number, since 4 + 4 + 3 + 97 + 6 + 63 + 489 = 666.

It is not a de Polignac number, because 44397663489 - 2⁹ = 44397662977 is a prime.

It is not an unprimeable number, because it can be changed into a prime (44397663469) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 256633807 + ... + 256633979.

It is an arithmetic number, because the mean of its divisors is an integer number (566370000).

Almost surely, 2^44397663489 is an apocalyptic number.

It is an amenable number.

44397663489 is a deficient number, since it is larger than the sum of its proper divisors (28097696511).

44397663489 is a wasteful number, since it uses less digits than its factorization.

44397663489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 460 (or 454 counting only the distinct ones).

The product of its digits is 94058496, while the sum is 63.

The spelling of 44397663489 in words is "forty-four billion, three hundred ninety-seven million, six hundred sixty-three thousand, four hundred eighty-nine".