98481989 has 2 divisors, whose sum is σ = 98481990. Its totient is φ = 98481988.

The previous prime is 98481983. The next prime is 98482079. The reversal of 98481989 is 98918489.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 56776225 + 41705764 = 7535^2 + 6458^2 .

It is a cyclic number.

It is not a de Polignac number, because 98481989 - 2⁴ = 98481973 is a prime.

It is a super-2 number, since 2×98481989² = 19397404314792242, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (98481983) 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 as a sum of consecutive naturals, namely, 49240994 + 49240995.

It is an arithmetic number, because the mean of its divisors is an integer number (49240995).

Almost surely, 2^98481989 is an apocalyptic number.

It is an amenable number.

98481989 is a deficient number, since it is larger than the sum of its proper divisors (1).

98481989 is an equidigital number, since it uses as much as digits as its factorization.

98481989 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1492992, while the sum is 56.

The square root of 98481989 is about 9923.8091980852. The cubic root of 98481989 is about 461.7982368309.

The spelling of 98481989 in words is "ninety-eight million, four hundred eighty-one thousand, nine hundred eighty-nine".