98999989 has 8 divisors (see below), whose sum is σ = 108072000. Its totient is φ = 89940000.

The previous prime is 98999987. The next prime is 99000007.

98999989 is nontrivially palindromic in base 10.

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

It is a cyclic number.

It is not a de Polignac number, because 98999989 - 2¹ = 98999987 is a prime.

It is a Duffinian number.

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 pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31489 + ... + 34489.

It is an arithmetic number, because the mean of its divisors is an integer number (13509000).

Almost surely, 2^98999989 is an apocalyptic number.

It is an amenable number.

98999989 is a deficient number, since it is larger than the sum of its proper divisors (9072011).

98999989 is a wasteful number, since it uses less digits than its factorization.

98999989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6011.

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

The square root of 98999989 is about 9949.8738182954. The cubic root of 98999989 is about 462.6064837847.

It can be divided in two parts, 9 and 8999989, that added together give a palindrome (8999998).

The spelling of 98999989 in words is "ninety-eight million, nine hundred ninety-nine thousand, nine hundred eighty-nine".