8645444 has 24 divisors (see below), whose sum is σ = 15523200. Its totient is φ = 4212000.

The previous prime is 8645443. The next prime is 8645449. The reversal of 8645444 is 4445468.

It is not an unprimeable number, because it can be changed into a prime (8645443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34319 + ... + 34569.

It is an arithmetic number, because the mean of its divisors is an integer number (646800).

Almost surely, 2^8645444 is an apocalyptic number.

It is an amenable number.

8645444 is a deficient number, since it is larger than the sum of its proper divisors (6877756).

8645444 is a wasteful number, since it uses less digits than its factorization.

8645444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 443 (or 441 counting only the distinct ones).

The product of its digits is 61440, while the sum is 35.

The square root of 8645444 is about 2940.3135887180. The cubic root of 8645444 is about 205.2402022796.

The spelling of 8645444 in words is "eight million, six hundred forty-five thousand, four hundred forty-four".