98999988 has 24 divisors (see below), whose sum is σ = 238452480. Its totient is φ = 31935360.

The previous prime is 98999987. The next prime is 99000007. The reversal of 98999988 is 88999989.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (98999983) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 132693 + ... + 133436.

It is an arithmetic number, because the mean of its divisors is an integer number (9935520).

Almost surely, 2^98999988 is an apocalyptic number.

It is an amenable number.

98999988 is an abundant number, since it is smaller than the sum of its proper divisors (139452492).

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

98999988 is a wasteful number, since it uses less digits than its factorization.

98999988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 266167 (or 266165 counting only the distinct ones).

The product of its digits is 30233088, while the sum is 69.

The square root of 98999988 is about 9949.8737680435. The cubic root of 98999988 is about 462.6064822271.

Subtracting from 98999988 its reverse (88999989), we obtain a palindrome (9999999).

The spelling of 98999988 in words is "ninety-eight million, nine hundred ninety-nine thousand, nine hundred eighty-eight".