98581729 has 2 divisors, whose sum is σ = 98581730. Its totient is φ = 98581728.

The previous prime is 98581699. The next prime is 98581733. The reversal of 98581729 is 92718589.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 65173329 + 33408400 = 8073^2 + 5780^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-98581729 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (98581739) 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, 49290864 + 49290865.

It is an arithmetic number, because the mean of its divisors is an integer number (49290865).

Almost surely, 2^98581729 is an apocalyptic number.

It is an amenable number.

98581729 is a deficient number, since it is larger than the sum of its proper divisors (1).

98581729 is an equidigital number, since it uses as much as digits as its factorization.

98581729 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 362880, while the sum is 49.

The square root of 98581729 is about 9928.8332144316. The cubic root of 98581729 is about 461.9540833161.

The spelling of 98581729 in words is "ninety-eight million, five hundred eighty-one thousand, seven hundred twenty-nine".