8947473992 has 36 divisors (see below), whose sum is σ = 17126165385. Its totient is φ = 4382370720.

The previous prime is 8947473979. The next prime is 8947474009. The reversal of 8947473992 is 2993747498.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in 2 ways, for example, as 8487199876 + 460274116 = 92126^2 + 21454^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=66886.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 14179517 + ... + 14180147.

Almost surely, 2^8947473992 is an apocalyptic number.

It is an amenable number.

8947473992 is a deficient number, since it is larger than the sum of its proper divisors (8178691393).

8947473992 is an frugal number, since it uses more digits than its factorization.

8947473992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1374 (or 686 counting only the distinct ones).

The product of its digits is 27433728, while the sum is 62.

The square root of 8947473992 is about 94591.0883328868. The cubic root of 8947473992 is about 2076.0293140253.

The spelling of 8947473992 in words is "eight billion, nine hundred forty-seven million, four hundred seventy-three thousand, nine hundred ninety-two".