998824858 has 8 divisors (see below), whose sum is σ = 1522798740. Its totient is φ = 491225280.

The previous prime is 998824843. The next prime is 998824859. The reversal of 998824858 is 858428899.

It can be written as a sum of positive squares in 2 ways, for example, as 904986889 + 93837969 = 30083^2 + 9687^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Harshad number since it is a multiple of its sum of digits (61).

It is a junction number, because it is equal to n+sod(n) for n = 998824796 and 998824805.

It is not an unprimeable number, because it can be changed into a prime (998824859) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 4093423 + ... + 4093666.

Almost surely, 2^998824858 is an apocalyptic number.

998824858 is a deficient number, since it is larger than the sum of its proper divisors (523973882).

998824858 is a wasteful number, since it uses less digits than its factorization.

998824858 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8187152.

The product of its digits is 13271040, while the sum is 61.

The square root of 998824858 is about 31604.1905132848. The cubic root of 998824858 is about 999.6081324599.

The spelling of 998824858 in words is "nine hundred ninety-eight million, eight hundred twenty-four thousand, eight hundred fifty-eight".