998885798 has 4 divisors (see below), whose sum is σ = 1498328700. Its totient is φ = 499442898.

The previous prime is 998885749. The next prime is 998885801. The reversal of 998885798 is 897588899.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 249721448 + ... + 249721451.

It is an arithmetic number, because the mean of its divisors is an integer number (374582175).

Almost surely, 2^998885798 is an apocalyptic number.

998885798 is a deficient number, since it is larger than the sum of its proper divisors (499442902).

998885798 is a wasteful number, since it uses less digits than its factorization.

998885798 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 499442901.

The product of its digits is 104509440, while the sum is 71.

The square root of 998885798 is about 31605.1546112339. The cubic root of 998885798 is about 999.6284613094.

The spelling of 998885798 in words is "nine hundred ninety-eight million, eight hundred eighty-five thousand, seven hundred ninety-eight".