8299394671689 has 27 divisors (see below), whose sum is σ = 13177059470029. Its totient is φ = 5029878547320.

The previous prime is 8299394671627. The next prime is 8299394671691. The reversal of 8299394671689 is 9861764939928.

The square root of 8299394671689 is 2880867.

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

8299394671689 is a `hidden beast` number, since 8 + 2 + 9 + 9 + 394 + 67 + 168 + 9 = 666.

It is not a de Polignac number, because 8299394671689 - 2⁹ = 8299394671177 is a prime.

It is a super-2 number, since 2×8299394671689² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8299394671699) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 95024962 + ... + 95112260.

Almost surely, 2^{8299394671689} is an apocalyptic number.

8299394671689 is the 2880867-th square number.

8299394671689 is the 1440434-th centered octagonal number.

It is an amenable number.

8299394671689 is a deficient number, since it is larger than the sum of its proper divisors (4877664798340).

8299394671689 is an frugal number, since it uses more digits than its factorization.

8299394671689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 174626 (or 87313 counting only the distinct ones).

The product of its digits is 2539579392, while the sum is 81.

Multiplying 8299394671689 by its sum of digits (81), we get a square (672250968406809 = 25927803²).

The spelling of 8299394671689 in words is "eight trillion, two hundred ninety-nine billion, three hundred ninety-four million, six hundred seventy-one thousand, six hundred eighty-nine".