809383664 has 10 divisors (see below), whose sum is σ = 1568180880. Its totient is φ = 404691824.

The previous prime is 809383657. The next prime is 809383669. The reversal of 809383664 is 466383908.

809383664 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (809383669) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25293224 + ... + 25293255.

It is an arithmetic number, because the mean of its divisors is an integer number (156818088).

Almost surely, 2^809383664 is an apocalyptic number.

It is an amenable number.

809383664 is a deficient number, since it is larger than the sum of its proper divisors (758797216).

809383664 is a wasteful number, since it uses less digits than its factorization.

809383664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50586487 (or 50586481 counting only the distinct ones).

The product of its (nonzero) digits is 746496, while the sum is 47.

The square root of 809383664 is about 28449.6689611672. The cubic root of 809383664 is about 931.9332597864.

The spelling of 809383664 in words is "eight hundred nine million, three hundred eighty-three thousand, six hundred sixty-four".