9647994472 has 8 divisors (see below), whose sum is σ = 18089989650. Its totient is φ = 4823997232.

The previous prime is 9647994467. The next prime is 9647994541. The reversal of 9647994472 is 2744997469.

It can be written as a sum of positive squares in only one way, i.e., 6646488676 + 3001505796 = 81526^2 + 54786^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 9647994472.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 602999647 + ... + 602999662.

Almost surely, 2^9647994472 is an apocalyptic number.

It is an amenable number.

9647994472 is a deficient number, since it is larger than the sum of its proper divisors (8441995178).

9647994472 is a wasteful number, since it uses less digits than its factorization.

9647994472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1205999315 (or 1205999311 counting only the distinct ones).

The product of its digits is 27433728, while the sum is 61.

The square root of 9647994472 is about 98224.2051227700. The cubic root of 9647994472 is about 2128.8530396930.

The spelling of 9647994472 in words is "nine billion, six hundred forty-seven million, nine hundred ninety-four thousand, four hundred seventy-two".