8447358249 has 12 divisors (see below), whose sum is σ = 13310988912. Its totient is φ = 5119611000.

The previous prime is 8447358187. The next prime is 8447358251. The reversal of 8447358249 is 9428537448.

8447358249 is a `hidden beast` number, since 8 + 4 + 47 + 358 + 249 = 666.

It is not a de Polignac number, because 8447358249 - 2⁸ = 8447357993 is a prime.

It is a super-2 number, since 2×8447358249² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 8447358195 and 8447358204.

It is not an unprimeable number, because it can be changed into a prime (8447358749) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 42663327 + ... + 42663524.

It is an arithmetic number, because the mean of its divisors is an integer number (1109249076).

Almost surely, 2^8447358249 is an apocalyptic number.

It is an amenable number.

8447358249 is a deficient number, since it is larger than the sum of its proper divisors (4863630663).

8447358249 is a wasteful number, since it uses less digits than its factorization.

8447358249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85326868 (or 85326865 counting only the distinct ones).

The product of its digits is 7741440, while the sum is 54.

The square root of 8447358249 is about 91909.5111998753. The cubic root of 8447358249 is about 2036.6057751055.

The spelling of 8447358249 in words is "eight billion, four hundred forty-seven million, three hundred fifty-eight thousand, two hundred forty-nine".