998997792 has 96 divisors (see below), whose sum is σ = 2990276352. Its totient is φ = 289296384.

The previous prime is 998997787. The next prime is 998997803. The reversal of 998997792 is 297799899.

It is a tau number, because it is divible by the number of its divisors (96).

It is an unprimeable number.

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 in 15 ways as a sum of consecutive naturals, for example, 2328 + ... + 44759.

It is an arithmetic number, because the mean of its divisors is an integer number (31148712).

Almost surely, 2^998997792 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 998997792, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1495138176).

998997792 is an abundant number, since it is smaller than the sum of its proper divisors (1991278560).

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

998997792 is a wasteful number, since it uses less digits than its factorization.

998997792 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47130 (or 47122 counting only the distinct ones).

The product of its digits is 46294416, while the sum is 69.

The square root of 998997792 is about 31606.9263295247. The cubic root of 998997792 is about 999.6658190022.

The spelling of 998997792 in words is "nine hundred ninety-eight million, nine hundred ninety-seven thousand, seven hundred ninety-two".