8544446491 has 6 divisors (see below), whose sum is σ = 9939458220. Its totient is φ = 7323811236.

The previous prime is 8544446489. The next prime is 8544446501. The reversal of 8544446491 is 1946444458.

It is not a de Polignac number, because 8544446491 - 2¹ = 8544446489 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (49), and also a Moran number because the ratio is a prime number: 174376459 = 8544446491 / (8 + 5 + 4 + 4 + 4 + 4 + 6 + 4 + 9 + 1).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8544446401) 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 5 ways as a sum of consecutive naturals, for example, 87188181 + ... + 87188278.

It is an arithmetic number, because the mean of its divisors is an integer number (1656576370).

Almost surely, 2^8544446491 is an apocalyptic number.

8544446491 is a deficient number, since it is larger than the sum of its proper divisors (1395011729).

8544446491 is a wasteful number, since it uses less digits than its factorization.

8544446491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 174376473 (or 174376466 counting only the distinct ones).

The product of its digits is 2211840, while the sum is 49.

The square root of 8544446491 is about 92436.1752291818. The cubic root of 8544446491 is about 2044.3785304769.

The spelling of 8544446491 in words is "eight billion, five hundred forty-four million, four hundred forty-six thousand, four hundred ninety-one".