819009084 has 24 divisors (see below), whose sum is σ = 1927936080. Its totient is φ = 270586624.

The previous prime is 819009083. The next prime is 819009091. The reversal of 819009084 is 480900918.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (819009083) 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 7 ways as a sum of consecutive naturals, for example, 300639 + ... + 303350.

It is an arithmetic number, because the mean of its divisors is an integer number (80330670).

Almost surely, 2^819009084 is an apocalyptic number.

It is an amenable number.

819009084 is an abundant number, since it is smaller than the sum of its proper divisors (1108926996).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

819009084 is a wasteful number, since it uses less digits than its factorization.

819009084 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 604109 (or 604107 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 39.

The square root of 819009084 is about 28618.3347523926. The cubic root of 819009084 is about 935.6129828502.

The spelling of 819009084 in words is "eight hundred nineteen million, nine thousand, eighty-four".