9447344985 has 32 divisors (see below), whose sum is σ = 16348445568. Its totient is φ = 4631016960.

The previous prime is 9447344957. The next prime is 9447344989. The reversal of 9447344985 is 5894437449.

It is not a de Polignac number, because 9447344985 - 2⁷ = 9447344857 is a prime.

It is not an unprimeable number, because it can be changed into a prime (9447344989) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 58531 + ... + 149400.

It is an arithmetic number, because the mean of its divisors is an integer number (510888924).

Almost surely, 2^9447344985 is an apocalyptic number.

It is an amenable number.

9447344985 is a deficient number, since it is larger than the sum of its proper divisors (6901100583).

9447344985 is a wasteful number, since it uses less digits than its factorization.

9447344985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 208185.

The product of its digits is 17418240, while the sum is 57.

The square root of 9447344985 is about 97197.4535931883. The cubic root of 9447344985 is about 2113.9916044195.

The spelling of 9447344985 in words is "nine billion, four hundred forty-seven million, three hundred forty-four thousand, nine hundred eighty-five".