8421182289 has 45 divisors (see below), whose sum is σ = 13250761719. Its totient is φ = 5153634720.

The previous prime is 8421182251. The next prime is 8421182293. The reversal of 8421182289 is 9822811248.

The square root of 8421182289 is 91767.

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

8421182289 is a `hidden beast` number, since 84 + 211 + 82 + 289 = 666.

It can be written as a sum of positive squares in 7 ways, for example, as 5124125889 + 3297056400 = 71583^2 + 57420^2 .

It is not a de Polignac number, because 8421182289 - 2²³ = 8412793681 is a prime.

It is a super-2 number, since 2×8421182289² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (8421182219) by changing a digit.

It is a polite number, since it can be written in 44 ways as a sum of consecutive naturals, for example, 46525779 + ... + 46525959.

Almost surely, 2^8421182289 is an apocalyptic number.

8421182289 is the 91767-th square number.

8421182289 is the 45884-th centered octagonal number.

It is an amenable number.

8421182289 is a deficient number, since it is larger than the sum of its proper divisors (4829579430).

8421182289 is an frugal number, since it uses more digits than its factorization.

8421182289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 420 (or 197 counting only the distinct ones).

The product of its digits is 147456, while the sum is 45.

The cubic root of 8421182289 is about 2034.4999778842.

The spelling of 8421182289 in words is "eight billion, four hundred twenty-one million, one hundred eighty-two thousand, two hundred eighty-nine".