98849921 has 2 divisors, whose sum is σ = 98849922. Its totient is φ = 98849920.

The previous prime is 98849873. The next prime is 98849953. The reversal of 98849921 is 12994889.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 94789696 + 4060225 = 9736^2 + 2015^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-98849921 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 98849921.

It is not a weakly prime, because it can be changed into another prime (98849021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49424960 + 49424961.

It is an arithmetic number, because the mean of its divisors is an integer number (49424961).

Almost surely, 2^98849921 is an apocalyptic number.

It is an amenable number.

98849921 is a deficient number, since it is larger than the sum of its proper divisors (1).

98849921 is an equidigital number, since it uses as much as digits as its factorization.

98849921 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 373248, while the sum is 50.

The square root of 98849921 is about 9942.3297571545. The cubic root of 98849921 is about 462.3726199974.

The spelling of 98849921 in words is "ninety-eight million, eight hundred forty-nine thousand, nine hundred twenty-one".