9444887481 has 16 divisors (see below), whose sum is σ = 12803380928. Its totient is φ = 6191553600.

The previous prime is 9444887477. The next prime is 9444887497. The reversal of 9444887481 is 1847884449.

It is not a de Polignac number, because 9444887481 - 2² = 9444887477 is a prime.

It is a super-2 number, since 2×9444887481² (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 (9444887401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 946086 + ... + 956016.

It is an arithmetic number, because the mean of its divisors is an integer number (800211308).

Almost surely, 2^9444887481 is an apocalyptic number.

It is an amenable number.

9444887481 is a deficient number, since it is larger than the sum of its proper divisors (3358493447).

9444887481 is a wasteful number, since it uses less digits than its factorization.

9444887481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15192.

The product of its digits is 8257536, while the sum is 57.

The square root of 9444887481 is about 97184.8109582974. The cubic root of 9444887481 is about 2113.8082868362.

The spelling of 9444887481 in words is "nine billion, four hundred forty-four million, eight hundred eighty-seven thousand, four hundred eighty-one".