8040643244 has 12 divisors (see below), whose sum is σ = 14124629904. Its totient is φ = 4005034704.

The previous prime is 8040643241. The next prime is 8040643253. The reversal of 8040643244 is 4423460408.

It is not an unprimeable number, because it can be changed into a prime (8040643241) 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 3 ways as a sum of consecutive naturals, for example, 3820547 + ... + 3822650.

It is an arithmetic number, because the mean of its divisors is an integer number (1177052492).

Almost surely, 2^8040643244 is an apocalyptic number.

It is an amenable number.

8040643244 is a deficient number, since it is larger than the sum of its proper divisors (6083986660).

8040643244 is a wasteful number, since it uses less digits than its factorization.

8040643244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7643464 (or 7643462 counting only the distinct ones).

The product of its (nonzero) digits is 73728, while the sum is 35.

The square root of 8040643244 is about 89669.6339013381. The cubic root of 8040643244 is about 2003.3812174629.

The spelling of 8040643244 in words is "eight billion, forty million, six hundred forty-three thousand, two hundred forty-four".