817997092 has 48 divisors (see below), whose sum is σ = 1657454400. Its totient is φ = 349107200.

The previous prime is 817997083. The next prime is 817997119. The reversal of 817997092 is 290799718.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 388659 + ... + 390757.

It is an arithmetic number, because the mean of its divisors is an integer number (34530300).

Almost surely, 2^817997092 is an apocalyptic number.

It is an amenable number.

817997092 is an abundant number, since it is smaller than the sum of its proper divisors (839457308).

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

817997092 is a wasteful number, since it uses less digits than its factorization.

817997092 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2652 (or 2650 counting only the distinct ones).

The product of its (nonzero) digits is 571536, while the sum is 52.

The square root of 817997092 is about 28600.6484541872. The cubic root of 817997092 is about 935.2274669390.

The spelling of 817997092 in words is "eight hundred seventeen million, nine hundred ninety-seven thousand, ninety-two".