819983404 has 6 divisors (see below), whose sum is σ = 1434970964. Its totient is φ = 409991700.

The previous prime is 819983401. The next prime is 819983413. The reversal of 819983404 is 404389918.

It is not an unprimeable number, because it can be changed into a prime (819983401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102497922 + ... + 102497929.

Almost surely, 2^819983404 is an apocalyptic number.

It is an amenable number.

819983404 is a deficient number, since it is larger than the sum of its proper divisors (614987560).

819983404 is a wasteful number, since it uses less digits than its factorization.

819983404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 204995855 (or 204995853 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 46.

The square root of 819983404 is about 28635.3523463568. The cubic root of 819983404 is about 935.9838477623.

The spelling of 819983404 in words is "eight hundred nineteen million, nine hundred eighty-three thousand, four hundred four".