8947948471 has 16 divisors (see below), whose sum is σ = 11163732480. Its totient is φ = 6967522080.

The previous prime is 8947948441. The next prime is 8947948507. The reversal of 8947948471 is 1748497498.

It is a cyclic number.

It is not a de Polignac number, because 8947948471 - 2⁵ = 8947948439 is a prime.

It is a super-3 number, since 3×8947948471³ (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 (8947948441) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 71265 + ... + 151573.

It is an arithmetic number, because the mean of its divisors is an integer number (697733280).

Almost surely, 2^8947948471 is an apocalyptic number.

8947948471 is a deficient number, since it is larger than the sum of its proper divisors (2215784009).

8947948471 is a wasteful number, since it uses less digits than its factorization.

8947948471 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81774.

The product of its digits is 16257024, while the sum is 61.

The square root of 8947948471 is about 94593.5963530302. The cubic root of 8947948471 is about 2076.0660102259.

The spelling of 8947948471 in words is "eight billion, nine hundred forty-seven million, nine hundred forty-eight thousand, four hundred seventy-one".