8489218409 has 4 divisors (see below), whose sum is σ = 9701963904. Its totient is φ = 7276472916.

The previous prime is 8489218403. The next prime is 8489218499. The reversal of 8489218409 is 9048129848.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 8489218409 - 2⁴ = 8489218393 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (8489218403) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 606372737 + ... + 606372750.

It is an arithmetic number, because the mean of its divisors is an integer number (2425490976).

Almost surely, 2^8489218409 is an apocalyptic number.

It is an amenable number.

8489218409 is a deficient number, since it is larger than the sum of its proper divisors (1212745495).

8489218409 is a wasteful number, since it uses less digits than its factorization.

8489218409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1212745494.

The product of its (nonzero) digits is 1327104, while the sum is 53.

The square root of 8489218409 is about 92136.9546327639. The cubic root of 8489218409 is about 2039.9643086957.

It can be divided in two parts, 84892 and 18409, that added together give a palindrome (103301).

The spelling of 8489218409 in words is "eight billion, four hundred eighty-nine million, two hundred eighteen thousand, four hundred nine".