98444221 has 2 divisors, whose sum is σ = 98444222. Its totient is φ = 98444220.

The previous prime is 98444197. The next prime is 98444231. The reversal of 98444221 is 12244489.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 92736900 + 5707321 = 9630^2 + 2389^2 .

It is an emirp because it is prime and its reverse (12244489) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 98444221 - 2¹³ = 98436029 is a prime.

It is equal to p_5677081 and since 98444221 and 5677081 have the same sum of digits, it is a Honaker prime.

It is a nialpdrome in base 10.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (98444231) 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, 49222110 + 49222111.

It is an arithmetic number, because the mean of its divisors is an integer number (49222111).

Almost surely, 2^98444221 is an apocalyptic number.

It is an amenable number.

98444221 is a deficient number, since it is larger than the sum of its proper divisors (1).

98444221 is an equidigital number, since it uses as much as digits as its factorization.

98444221 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 18432, while the sum is 34.

The square root of 98444221 is about 9921.9061172740. The cubic root of 98444221 is about 461.7391958291.

The spelling of 98444221 in words is "ninety-eight million, four hundred forty-four thousand, two hundred twenty-one".