9917470984 has 8 divisors (see below), whose sum is σ = 18595258110. Its totient is φ = 4958735488.

The previous prime is 9917470957. The next prime is 9917471027. The reversal of 9917470984 is 4890747199.

It can be written as a sum of positive squares in only one way, i.e., 7944156900 + 1973314084 = 89130^2 + 44422^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 619841929 + ... + 619841944.

Almost surely, 2^9917470984 is an apocalyptic number.

It is an amenable number.

9917470984 is a deficient number, since it is larger than the sum of its proper divisors (8677787126).

9917470984 is a wasteful number, since it uses less digits than its factorization.

9917470984 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1239683879 (or 1239683875 counting only the distinct ones).

The product of its (nonzero) digits is 4572288, while the sum is 58.

The square root of 9917470984 is about 99586.5000087863. The cubic root of 9917470984 is about 2148.4915313215.

The spelling of 9917470984 in words is "nine billion, nine hundred seventeen million, four hundred seventy thousand, nine hundred eighty-four".