98724281 has 2 divisors, whose sum is σ = 98724282. Its totient is φ = 98724280.

The previous prime is 98724239. The next prime is 98724317. The reversal of 98724281 is 18242789.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 94381225 + 4343056 = 9715^2 + 2084^2 .

It is an emirp because it is prime and its reverse (18242789) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 98724281 - 2¹⁸ = 98462137 is a prime.

It is a super-2 number, since 2×98724281² = 19492967317933922, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (98724481) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49362140 + 49362141.

It is an arithmetic number, because the mean of its divisors is an integer number (49362141).

Almost surely, 2^98724281 is an apocalyptic number.

It is an amenable number.

98724281 is a deficient number, since it is larger than the sum of its proper divisors (1).

98724281 is an equidigital number, since it uses as much as digits as its factorization.

98724281 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 64512, while the sum is 41.

The square root of 98724281 is about 9936.0093095770. The cubic root of 98724281 is about 462.1766423477.

The spelling of 98724281 in words is "ninety-eight million, seven hundred twenty-four thousand, two hundred eighty-one".