998396874 has 64 divisors (see below), whose sum is σ = 2255460480. Its totient is φ = 327317760.

The previous prime is 998396873. The next prime is 998396887. The reversal of 998396874 is 478693899.

998396874 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (998396873) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1510104 + ... + 1510764.

It is an arithmetic number, because the mean of its divisors is an integer number (35241570).

Almost surely, 2^998396874 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 998396874, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1127730240).

998396874 is an abundant number, since it is smaller than the sum of its proper divisors (1257063606).

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

998396874 is a wasteful number, since it uses less digits than its factorization.

998396874 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1092 (or 1086 counting only the distinct ones).

The product of its digits is 23514624, while the sum is 63.

The square root of 998396874 is about 31597.4187869832. The cubic root of 998396874 is about 999.4653388551.

The spelling of 998396874 in words is "nine hundred ninety-eight million, three hundred ninety-six thousand, eight hundred seventy-four".