8947904471 has 16 divisors (see below), whose sum is σ = 9942281088. Its totient is φ = 7984548000.

The previous prime is 8947904461. The next prime is 8947904473. The reversal of 8947904471 is 1744097498.

It is a de Polignac number, because none of the positive numbers 2^k-8947904471 is a prime.

It is a super-3 number, since 3×8947904471³ (a number of 31 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8947904473) 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, 187121 + ... + 230021.

It is an arithmetic number, because the mean of its divisors is an integer number (621392568).

Almost surely, 2^8947904471 is an apocalyptic number.

8947904471 is a deficient number, since it is larger than the sum of its proper divisors (994376617).

8947904471 is a wasteful number, since it uses less digits than its factorization.

8947904471 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43262.

The product of its (nonzero) digits is 2032128, while the sum is 53.

The square root of 8947904471 is about 94593.3637788614. The cubic root of 8947904471 is about 2076.0626073210.

The spelling of 8947904471 in words is "eight billion, nine hundred forty-seven million, nine hundred four thousand, four hundred seventy-one".