998404868 has 12 divisors (see below), whose sum is σ = 1751361612. Its totient is φ = 498015840.

The previous prime is 998404859. The next prime is 998404871. The reversal of 998404868 is 868404899.

It can be written as a sum of positive squares in 2 ways, for example, as 58491904 + 939912964 = 7648^2 + 30658^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 294755 + ... + 298122.

It is an arithmetic number, because the mean of its divisors is an integer number (145946801).

Almost surely, 2^998404868 is an apocalyptic number.

It is an amenable number.

998404868 is a deficient number, since it is larger than the sum of its proper divisors (752956744).

998404868 is a wasteful number, since it uses less digits than its factorization.

998404868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 593302 (or 593300 counting only the distinct ones).

The product of its (nonzero) digits is 3981312, while the sum is 56.

The square root of 998404868 is about 31597.5452844046. The cubic root of 998404868 is about 999.4680063663.

The spelling of 998404868 in words is "nine hundred ninety-eight million, four hundred four thousand, eight hundred sixty-eight".