101998998 has 24 divisors (see below), whose sum is σ = 222958008. Its totient is φ = 33698112.

The previous prime is 101998987. The next prime is 101998999. The reversal of 101998998 is 899899101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101998999) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 23040 + ... + 27107.

It is an arithmetic number, because the mean of its divisors is an integer number (9289917).

Almost surely, 2^101998998 is an apocalyptic number.

101998998 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

101998998 is an abundant number, since it is smaller than the sum of its proper divisors (120959010).

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

101998998 is a wasteful number, since it uses less digits than its factorization.

101998998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50268 (or 50265 counting only the distinct ones).

The product of its (nonzero) digits is 419904, while the sum is 54.

The square root of 101998998 is about 10099.4553318483. The cubic root of 101998998 is about 467.2313428719.

The spelling of 101998998 in words is "one hundred one million, nine hundred ninety-eight thousand, nine hundred ninety-eight".