98966989 has 12 divisors (see below), whose sum is σ = 111440700. Its totient is φ = 87771200.

The previous prime is 98966947. The next prime is 98966993.

98966989 is nontrivially palindromic in base 10.

It can be written as a sum of positive squares in 2 ways, for example, as 7382089 + 91584900 = 2717^2 + 9570^2 .

It is not a de Polignac number, because 98966989 - 2¹¹ = 98964941 is a prime.

It is a super-2 number, since 2×98966989² = 19588929823452242, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 98966989.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (98966929) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5014 + ... + 14935.

It is an arithmetic number, because the mean of its divisors is an integer number (9286725).

Almost surely, 2^98966989 is an apocalyptic number.

It is an amenable number.

98966989 is a deficient number, since it is larger than the sum of its proper divisors (12473711).

98966989 is a wasteful number, since it uses less digits than its factorization.

98966989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20012 (or 20001 counting only the distinct ones).

The product of its digits is 15116544, while the sum is 64.

The square root of 98966989 is about 9948.2153675923. The cubic root of 98966989 is about 462.5550773463. Note that the first 3 decimals are identical.

The spelling of 98966989 in words is "ninety-eight million, nine hundred sixty-six thousand, nine hundred eighty-nine".