8170894449 has 27 divisors (see below), whose sum is σ = 12235192203. Its totient is φ = 5254364304.

The previous prime is 8170894447. The next prime is 8170894499. The reversal of 8170894449 is 9444980718.

The square root of 8170894449 is 90393.

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

It can be written as a sum of positive squares in only one way, i.e., 4284618849 + 3886275600 = 65457^2 + 62340^2 .

It is not a de Polignac number, because 8170894449 - 2¹ = 8170894447 is a prime.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 8170894395 and 8170894404.

It is not an unprimeable number, because it can be changed into a prime (8170894447) 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, 7863672 + ... + 7864710.

Almost surely, 2^8170894449 is an apocalyptic number.

8170894449 is the 90393-rd square number.

8170894449 is the 45197-th centered octagonal number.

It is an amenable number.

8170894449 is a deficient number, since it is larger than the sum of its proper divisors (4064297754).

8170894449 is an equidigital number, since it uses as much as digits as its factorization.

8170894449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2142 (or 1071 counting only the distinct ones).

The product of its (nonzero) digits is 2322432, while the sum is 54.

The cubic root of 8170894449 is about 2014.1409847143.

The spelling of 8170894449 in words is "eight billion, one hundred seventy million, eight hundred ninety-four thousand, four hundred forty-nine".