98999990 has 8 divisors (see below), whose sum is σ = 178200000. Its totient is φ = 39599992.

The previous prime is 98999987. The next prime is 99000007. The reversal of 98999990 is 9999989.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

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 3 ways as a sum of consecutive naturals, for example, 4949990 + ... + 4950009.

It is an arithmetic number, because the mean of its divisors is an integer number (22275000).

Almost surely, 2^98999990 is an apocalyptic number.

98999990 is a deficient number, since it is larger than the sum of its proper divisors (79200010).

98999990 is a wasteful number, since it uses less digits than its factorization.

98999990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9900006.

The product of its (nonzero) digits is 4251528, while the sum is 62.

The square root of 98999990 is about 9949.8738685473. The cubic root of 98999990 is about 462.6064853423.

The spelling of 98999990 in words is "ninety-eight million, nine hundred ninety-nine thousand, nine hundred ninety".