8489571933969 has 75 divisors (see below), whose sum is σ = 14796971257497. Its totient is φ = 4850449713144.

The previous prime is 8489571933907. The next prime is 8489571933979. The reversal of 8489571933969 is 9693391759848.

The square root of 8489571933969 is 2913687.

It is a perfect power (a square), and thus also a powerful number.

8489571933969 is a `hidden beast` number, since 8 + 4 + 8 + 9 + 571 + 9 + 3 + 39 + 6 + 9 = 666.

It is not a de Polignac number, because 8489571933969 - 2³⁵ = 8455212195601 is a prime.

It is a super-3 number, since 3×8489571933969³ (a number of 40 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Harshad number since it is a multiple of its sum of digits (81).

It is not an unprimeable number, because it can be changed into a prime (8489571933979) by changing a digit.

It is a polite number, since it can be written in 74 ways as a sum of consecutive naturals, for example, 1284932664 + ... + 1284939270.

Almost surely, 2^{8489571933969} is an apocalyptic number.

8489571933969 is the 2913687-th square number.

8489571933969 is the 1456844-th centered octagonal number.

It is an amenable number.

8489571933969 is a deficient number, since it is larger than the sum of its proper divisors (6307399323528).

8489571933969 is an frugal number, since it uses more digits than its factorization.

8489571933969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13254 (or 6617 counting only the distinct ones).

The product of its digits is 3174474240, while the sum is 81.

Multiplying 8489571933969 by its sum of digits (81), we get a square (687655326651489 = 26223183²).

8489571933969 divided by its sum of digits (81) gives a square (104809530049 = 323743²).

The spelling of 8489571933969 in words is "eight trillion, four hundred eighty-nine billion, five hundred seventy-one million, nine hundred thirty-three thousand, nine hundred sixty-nine".