98999998 has 16 divisors (see below), whose sum is σ = 150632784. Its totient is φ = 48793600.

The previous prime is 98999987. The next prime is 99000007. The reversal of 98999998 is 89999989.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50961 + ... + 52867.

It is an arithmetic number, because the mean of its divisors is an integer number (9414549).

Almost surely, 2^98999998 is an apocalyptic number.

98999998 is a deficient number, since it is larger than the sum of its proper divisors (51632786).

98999998 is a wasteful number, since it uses less digits than its factorization.

98999998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2267.

The product of its digits is 34012224, while the sum is 70.

The square root of 98999998 is about 9949.8742705624. The cubic root of 98999998 is about 462.6064978031.

Subtracting from 98999998 its reverse (89999989), we obtain a palindrome (9000009).

The spelling of 98999998 in words is "ninety-eight million, nine hundred ninety-nine thousand, nine hundred ninety-eight".