8447801245 has 32 divisors (see below), whose sum is σ = 11748935520. Its totient is φ = 5775114240.

The previous prime is 8447801209. The next prime is 8447801249. The reversal of 8447801245 is 5421087448.

It can be written as a sum of positive squares in 16 ways, for example, as 2734557849 + 5713243396 = 52293^2 + 75586^2 .

It is not a de Polignac number, because 8447801245 - 2⁹ = 8447800733 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8447801249) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4741 + ... + 130069.

It is an arithmetic number, because the mean of its divisors is an integer number (367154235).

Almost surely, 2^8447801245 is an apocalyptic number.

8447801245 is a gapful number since it is divisible by the number (85) formed by its first and last digit.

It is an amenable number.

8447801245 is a deficient number, since it is larger than the sum of its proper divisors (3301134275).

8447801245 is a wasteful number, since it uses less digits than its factorization.

8447801245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125425.

The product of its (nonzero) digits is 286720, while the sum is 43.

The square root of 8447801245 is about 91911.9211256081. The cubic root of 8447801245 is about 2036.6413756808.

The spelling of 8447801245 in words is "eight billion, four hundred forty-seven million, eight hundred one thousand, two hundred forty-five".