8459423549 has 4 divisors (see below), whose sum is σ = 8460182364. Its totient is φ = 8458664736.

The previous prime is 8459423543. The next prime is 8459423597. The reversal of 8459423549 is 9453249548.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4462908025 + 3996515524 = 66805^2 + 63218^2 .

It is a cyclic number.

It is not a de Polignac number, because 8459423549 - 2¹⁶ = 8459358013 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 8459423549.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8459423543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 362432 + ... + 385065.

It is an arithmetic number, because the mean of its divisors is an integer number (2115045591).

Almost surely, 2^8459423549 is an apocalyptic number.

It is an amenable number.

8459423549 is a deficient number, since it is larger than the sum of its proper divisors (758815).

8459423549 is a wasteful number, since it uses less digits than its factorization.

8459423549 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 758814.

The product of its digits is 6220800, while the sum is 53.

The square root of 8459423549 is about 91975.1246207364. The cubic root of 8459423549 is about 2037.5749368803.

The spelling of 8459423549 in words is "eight billion, four hundred fifty-nine million, four hundred twenty-three thousand, five hundred forty-nine".