100000998 has 12 divisors (see below), whose sum is σ = 216668868. Its totient is φ = 33333660.

The previous prime is 100000969. The next prime is 100001029. The reversal of 100000998 is 899000001.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2777788 + ... + 2777823.

It is an arithmetic number, because the mean of its divisors is an integer number (18055739).

Almost surely, 2^100000998 is an apocalyptic number.

100000998 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

100000998 is an abundant number, since it is smaller than the sum of its proper divisors (116667870).

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

100000998 is a wasteful number, since it uses less digits than its factorization.

100000998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5555619 (or 5555616 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 27.

The square root of 100000998 is about 10000.0498998755. The cubic root of 100000998 is about 464.1604274580.

Adding to 100000998 its reverse (899000001), we get a palindrome (999000999).

The spelling of 100000998 in words is "one hundred million, nine hundred ninety-eight", and thus it is an aban number.