8644493 has 16 divisors (see below), whose sum is σ = 10332672. Its totient is φ = 7128000.

The previous prime is 8644477. The next prime is 8644499. The reversal of 8644493 is 3944468.

It is not a de Polignac number, because 8644493 - 2⁴ = 8644477 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 (8644499) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8228 + ... + 9218.

It is an arithmetic number, because the mean of its divisors is an integer number (645792).

Almost surely, 2^8644493 is an apocalyptic number.

It is an amenable number.

8644493 is a deficient number, since it is larger than the sum of its proper divisors (1688179).

8644493 is a wasteful number, since it uses less digits than its factorization.

8644493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1076.

The product of its digits is 82944, while the sum is 38.

The square root of 8644493 is about 2940.1518668259. The cubic root of 8644493 is about 205.2326765204.

The spelling of 8644493 in words is "eight million, six hundred forty-four thousand, four hundred ninety-three".