809023144 has 16 divisors (see below), whose sum is σ = 1518501600. Its totient is φ = 404089392.

The previous prime is 809023141. The next prime is 809023153. The reversal of 809023144 is 441320908.

It is not an unprimeable number, because it can be changed into a prime (809023141) 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 3 ways as a sum of consecutive naturals, for example, 44554 + ... + 60025.

It is an arithmetic number, because the mean of its divisors is an integer number (94906350).

Almost surely, 2^809023144 is an apocalyptic number.

It is an amenable number.

809023144 is a deficient number, since it is larger than the sum of its proper divisors (709478456).

809023144 is a wasteful number, since it uses less digits than its factorization.

809023144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105552 (or 105548 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 31.

The square root of 809023144 is about 28443.3321535997. The cubic root of 809023144 is about 931.7948703382.

The spelling of 809023144 in words is "eight hundred nine million, twenty-three thousand, one hundred forty-four".