998679312 has 240 divisors, whose sum is σ = 3022306560. Its totient is φ = 307353600.

The previous prime is 998679301. The next prime is 998679361. The reversal of 998679312 is 213976899.

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 47 ways as a sum of consecutive naturals, for example, 16371762 + ... + 16371822.

It is an arithmetic number, because the mean of its divisors is an integer number (12592944).

Almost surely, 2^998679312 is an apocalyptic number.

998679312 is the 25803-rd pentagonal number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 998679312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1511153280).

998679312 is an abundant number, since it is smaller than the sum of its proper divisors (2023627248).

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

998679312 is a wasteful number, since it uses less digits than its factorization.

998679312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 222 (or 213 counting only the distinct ones).

The product of its digits is 1469664, while the sum is 54.

The square root of 998679312 is about 31601.8877917127. The cubic root of 998679312 is about 999.5595767225.

It can be divided in two parts, 998679 and 312, that added together give a triangular number (998991 = T₁₄₁₃).

The spelling of 998679312 in words is "nine hundred ninety-eight million, six hundred seventy-nine thousand, three hundred twelve".