998839952 has 80 divisors (see below), whose sum is σ = 2214715392. Its totient is φ = 431967360.

The previous prime is 998839951. The next prime is 998839979. The reversal of 998839952 is 259938899.

It is a happy number.

It is a super-2 number, since 2×998839952² = 1995362499422724608, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (998839951) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 918353 + ... + 919439.

Almost surely, 2^998839952 is an apocalyptic number.

998839952 is a gapful number since it is divisible by the number (92) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 998839952, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1107357696).

998839952 is an abundant number, since it is smaller than the sum of its proper divisors (1215875440).

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

998839952 is a wasteful number, since it uses less digits than its factorization.

998839952 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1356 (or 1350 counting only the distinct ones).

The product of its digits is 12597120, while the sum is 62.

The square root of 998839952 is about 31604.4293098293. The cubic root of 998839952 is about 999.6131677134.

It can be divided in two parts, 9988 and 39952, that multiplied together give a square (399040576 = 19976²).

The spelling of 998839952 in words is "nine hundred ninety-eight million, eight hundred thirty-nine thousand, nine hundred fifty-two".