819984452 has 12 divisors (see below), whose sum is σ = 1639968960. Its totient is φ = 351421896.

The previous prime is 819984439. The next prime is 819984497. The reversal of 819984452 is 254489918.

819984452 is an admirable number.

It is a hoax number, since the sum of its digits (50) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 819984452.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14642552 + ... + 14642607.

It is an arithmetic number, because the mean of its divisors is an integer number (136664080).

Almost surely, 2^819984452 is an apocalyptic number.

It is an amenable number.

819984452 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

819984452 is a wasteful number, since it uses less digits than its factorization.

819984452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29285170 (or 29285168 counting only the distinct ones).

The product of its digits is 829440, while the sum is 50.

The square root of 819984452 is about 28635.3706454098. The cubic root of 819984452 is about 935.9842465145.

The spelling of 819984452 in words is "eight hundred nineteen million, nine hundred eighty-four thousand, four hundred fifty-two".