98589400813 has 2 divisors, whose sum is σ = 98589400814. Its totient is φ = 98589400812.

The previous prime is 98589400799. The next prime is 98589400841. The reversal of 98589400813 is 31800498589.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 97485699529 + 1103701284 = 312227^2 + 33222^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-98589400813 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (98589400883) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49294700406 + 49294700407.

It is an arithmetic number, because the mean of its divisors is an integer number (49294700407).

Almost surely, 2^98589400813 is an apocalyptic number.

It is an amenable number.

98589400813 is a deficient number, since it is larger than the sum of its proper divisors (1).

98589400813 is an equidigital number, since it uses as much as digits as its factorization.

98589400813 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2488320, while the sum is 55.

The spelling of 98589400813 in words is "ninety-eight billion, five hundred eighty-nine million, four hundred thousand, eight hundred thirteen".