8447448461 has 8 divisors (see below), whose sum is σ = 8957900664. Its totient is φ = 7938501120.

The previous prime is 8447448413. The next prime is 8447448463. The reversal of 8447448461 is 1648447448.

It can be written as a sum of positive squares in 4 ways, for example, as 6578183236 + 1869265225 = 81106^2 + 43235^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 8447448461 - 2⁶ = 8447448397 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8447448463) 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 7 ways as a sum of consecutive naturals, for example, 364640 + ... + 387113.

It is an arithmetic number, because the mean of its divisors is an integer number (1119737583).

Almost surely, 2^8447448461 is an apocalyptic number.

It is an amenable number.

8447448461 is a deficient number, since it is larger than the sum of its proper divisors (510452203).

8447448461 is a wasteful number, since it uses less digits than its factorization.

8447448461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 752431.

The product of its digits is 2752512, while the sum is 50.

The square root of 8447448461 is about 91910.0019638777. The cubic root of 8447448461 is about 2036.6130249312.

The spelling of 8447448461 in words is "eight billion, four hundred forty-seven million, four hundred forty-eight thousand, four hundred sixty-one".