8440408448 has 16 divisors (see below), whose sum is σ = 16814876460. Its totient is φ = 4220204160.

The previous prime is 8440408429. The next prime is 8440408499. The reversal of 8440408448 is 8448040448.

It is a tau number, because it is divible by the number of its divisors (16).

It is a junction number, because it is equal to n+sod(n) for n = 8440408399 and 8440408408.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32970218 + ... + 32970473.

Almost surely, 2^8440408448 is an apocalyptic number.

It is an amenable number.

8440408448 is a deficient number, since it is larger than the sum of its proper divisors (8374468012).

8440408448 is an equidigital number, since it uses as much as digits as its factorization.

8440408448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65940705 (or 65940693 counting only the distinct ones).

The product of its (nonzero) digits is 524288, while the sum is 44.

The square root of 8440408448 is about 91871.6955759498. The cubic root of 8440408448 is about 2036.0471038697.

The spelling of 8440408448 in words is "eight billion, four hundred forty million, four hundred eight thousand, four hundred forty-eight".