8447557448 has 32 divisors (see below), whose sum is σ = 18295515360. Its totient is φ = 3613927680.

The previous prime is 8447557429. The next prime is 8447557457.

8447557448 is nontrivially palindromic in base 10.

It is a super-2 number, since 2×8447557448² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 8447557393 and 8447557402.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2821886 + ... + 2824877.

It is an arithmetic number, because the mean of its divisors is an integer number (571734855).

Almost surely, 2^8447557448 is an apocalyptic number.

8447557448 is a gapful number since it is divisible by the number (88) formed by its first and last digit.

It is an amenable number.

8447557448 is an abundant number, since it is smaller than the sum of its proper divisors (9847957912).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8447557448 is a wasteful number, since it uses less digits than its factorization.

8447557448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5646797 (or 5646793 counting only the distinct ones).

The product of its digits is 20070400, while the sum is 56.

The square root of 8447557448 is about 91910.5948626164. The cubic root of 8447557448 is about 2036.6217835282.

The spelling of 8447557448 in words is "eight billion, four hundred forty-seven million, five hundred fifty-seven thousand, four hundred forty-eight".