8247419505 has 24 divisors (see below), whose sum is σ = 15395184168. Its totient is φ = 4060267776.

The previous prime is 8247419503. The next prime is 8247419513. The reversal of 8247419505 is 5059147428.

It can be written as a sum of positive squares in 4 ways, for example, as 84658401 + 8162761104 = 9201^2 + 90348^2 .

It is not a de Polignac number, because 8247419505 - 2¹ = 8247419503 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (8247419503) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7048492 + ... + 7049661.

It is an arithmetic number, because the mean of its divisors is an integer number (641466007).

Almost surely, 2^8247419505 is an apocalyptic number.

It is an amenable number.

8247419505 is a deficient number, since it is larger than the sum of its proper divisors (7147764663).

8247419505 is a wasteful number, since it uses less digits than its factorization.

8247419505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14098177 (or 14098174 counting only the distinct ones).

The product of its (nonzero) digits is 403200, while the sum is 45.

The square root of 8247419505 is about 90815.3043544974. The cubic root of 8247419505 is about 2020.4093136011.

The spelling of 8247419505 in words is "eight billion, two hundred forty-seven million, four hundred nineteen thousand, five hundred five".