998948340 has 288 divisors, whose sum is σ = 3451908096. Its totient is φ = 232104960.

The previous prime is 998948329. The next prime is 998948341. The reversal of 998948340 is 43849899.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (998948341) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 3409234 + ... + 3409526.

It is an arithmetic number, because the mean of its divisors is an integer number (11985792).

Almost surely, 2^998948340 is an apocalyptic number.

998948340 is a gapful number since it is divisible by the number (90) 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 998948340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1725954048).

998948340 is an abundant number, since it is smaller than the sum of its proper divisors (2452959756).

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

998948340 is a wasteful number, since it uses less digits than its factorization.

998948340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 399 (or 394 counting only the distinct ones).

The product of its (nonzero) digits is 2239488, while the sum is 54.

The square root of 998948340 is about 31606.1440229586. The cubic root of 998948340 is about 999.6493237072.

The spelling of 998948340 in words is "nine hundred ninety-eight million, nine hundred forty-eight thousand, three hundred forty".