8998448989 has 2 divisors, whose sum is σ = 8998448990. Its totient is φ = 8998448988.

The previous prime is 8998448981. The next prime is 8998449023. The reversal of 8998448989 is 9898448998.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6616520964 + 2381928025 = 81342^2 + 48805^2 .

It is a cyclic number.

It is not a de Polignac number, because 8998448989 - 2³ = 8998448981 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8998448981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4499224494 + 4499224495.

It is an arithmetic number, because the mean of its divisors is an integer number (4499224495).

Almost surely, 2^8998448989 is an apocalyptic number.

It is an amenable number.

8998448989 is a deficient number, since it is larger than the sum of its proper divisors (1).

8998448989 is an equidigital number, since it uses as much as digits as its factorization.

8998448989 is an evil number, because the sum of its binary digits is even.

The product of its digits is 429981696, while the sum is 76.

The square root of 8998448989 is about 94860.1549071052. The cubic root of 8998448989 is about 2079.9643260801.

Subtracting 8998448989 from its reverse (9898448998), we obtain a palindrome (900000009).

The spelling of 8998448989 in words is "eight billion, nine hundred ninety-eight million, four hundred forty-eight thousand, nine hundred eighty-nine".