98338921 has 2 divisors, whose sum is σ = 98338922. Its totient is φ = 98338920.

The previous prime is 98338879. The next prime is 98338939. The reversal of 98338921 is 12983389.

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., 51265600 + 47073321 = 7160^2 + 6861^2 .

It is a cyclic number.

It is not a de Polignac number, because 98338921 - 2¹¹ = 98336873 is a prime.

It is not a weakly prime, because it can be changed into another prime (98338021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49169460 + 49169461.

It is an arithmetic number, because the mean of its divisors is an integer number (49169461).

Almost surely, 2^98338921 is an apocalyptic number.

It is an amenable number.

98338921 is a deficient number, since it is larger than the sum of its proper divisors (1).

98338921 is an equidigital number, since it uses as much as digits as its factorization.

98338921 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 93312, while the sum is 43.

The square root of 98338921 is about 9916.5982574671. The cubic root of 98338921 is about 461.5745053311.

The spelling of 98338921 in words is "ninety-eight million, three hundred thirty-eight thousand, nine hundred twenty-one".