998387712 has 312 divisors, whose sum is σ = 3404048544. Its totient is φ = 276037632.

The previous prime is 998387693. The next prime is 998387743. The reversal of 998387712 is 217783899.

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 13676508 + ... + 13676580.

It is an arithmetic number, because the mean of its divisors is an integer number (10910412).

Almost surely, 2^998387712 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 998387712, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1702024272).

998387712 is an abundant number, since it is smaller than the sum of its proper divisors (2405660832).

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

998387712 is a wasteful number, since it uses less digits than its factorization.

998387712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 163 (or 138 counting only the distinct ones).

The product of its digits is 1524096, while the sum is 54.

The square root of 998387712 is about 31597.2738064536. The cubic root of 998387712 is about 999.4622815774.

The spelling of 998387712 in words is "nine hundred ninety-eight million, three hundred eighty-seven thousand, seven hundred twelve".