98988990 has 16 divisors (see below), whose sum is σ = 237573648. Its totient is φ = 26397056.

The previous prime is 98988979. The next prime is 98988991. The reversal of 98988990 is 9988989.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (98988991) 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, 1649787 + ... + 1649846.

It is an arithmetic number, because the mean of its divisors is an integer number (14848353).

Almost surely, 2^98988990 is an apocalyptic number.

98988990 is an abundant number, since it is smaller than the sum of its proper divisors (138584658).

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

98988990 is a wasteful number, since it uses less digits than its factorization.

98988990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3299643.

The product of its (nonzero) digits is 3359232, while the sum is 60.

The square root of 98988990 is about 9949.3210823654. The cubic root of 98988990 is about 462.5893511324.

The spelling of 98988990 in words is "ninety-eight million, nine hundred eighty-eight thousand, nine hundred ninety".