8213784044 has 12 divisors (see below), whose sum is σ = 14385369600. Its totient is φ = 4103678448.

The previous prime is 8213784041. The next prime is 8213784067. The reversal of 8213784044 is 4404873128.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 8213783992 and 8213784010.

It is not an unprimeable number, because it can be changed into a prime (8213784041) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 797639 + ... + 807870.

It is an arithmetic number, because the mean of its divisors is an integer number (1198780800).

Almost surely, 2^8213784044 is an apocalyptic number.

It is an amenable number.

8213784044 is a deficient number, since it is larger than the sum of its proper divisors (6171585556).

8213784044 is a wasteful number, since it uses less digits than its factorization.

8213784044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1606792 (or 1606790 counting only the distinct ones).

The product of its (nonzero) digits is 172032, while the sum is 41.

The square root of 8213784044 is about 90629.9290742302. The cubic root of 8213784044 is about 2017.6589586932.

The spelling of 8213784044 in words is "eight billion, two hundred thirteen million, seven hundred eighty-four thousand, forty-four".