9444578881 has 16 divisors (see below), whose sum is σ = 10097720640. Its totient is φ = 8807823360.

The previous prime is 9444578879. The next prime is 9444578963. The reversal of 9444578881 is 1888754449.

It is a cyclic number.

It is not a de Polignac number, because 9444578881 - 2¹ = 9444578879 is a prime.

It is a super-2 number, since 2×9444578881² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9444578851) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 432481 + ... + 453793.

It is an arithmetic number, because the mean of its divisors is an integer number (631107540).

Almost surely, 2^9444578881 is an apocalyptic number.

It is an amenable number.

9444578881 is a deficient number, since it is larger than the sum of its proper divisors (653141759).

9444578881 is a wasteful number, since it uses less digits than its factorization.

9444578881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21696.

The product of its digits is 10321920, while the sum is 58.

The square root of 9444578881 is about 97183.2232486657. The cubic root of 9444578881 is about 2113.7852645629.

The spelling of 9444578881 in words is "nine billion, four hundred forty-four million, five hundred seventy-eight thousand, eight hundred eighty-one".