9444438865 has 32 divisors (see below), whose sum is σ = 11671776000. Its totient is φ = 7333724160.

The previous prime is 9444438799. The next prime is 9444438877. The reversal of 9444438865 is 5688344449.

It is not a de Polignac number, because 9444438865 - 2¹³ = 9444430673 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 14967100 + ... + 14967730.

It is an arithmetic number, because the mean of its divisors is an integer number (364743000).

Almost surely, 2^9444438865 is an apocalyptic number.

It is an amenable number.

9444438865 is a deficient number, since it is larger than the sum of its proper divisors (2227337135).

9444438865 is a wasteful number, since it uses less digits than its factorization.

9444438865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1257.

The product of its digits is 13271040, while the sum is 55.

The square root of 9444438865 is about 97182.5028747459. The cubic root of 9444438865 is about 2113.7748188803.

The spelling of 9444438865 in words is "nine billion, four hundred forty-four million, four hundred thirty-eight thousand, eight hundred sixty-five".