98557859 has 2 divisors, whose sum is σ = 98557860. Its totient is φ = 98557858.

The previous prime is 98557853. The next prime is 98557867. The reversal of 98557859 is 95875589.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 98557859 - 2⁴ = 98557843 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (98557853) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49278929 + 49278930.

It is an arithmetic number, because the mean of its divisors is an integer number (49278930).

Almost surely, 2^98557859 is an apocalyptic number.

98557859 is a deficient number, since it is larger than the sum of its proper divisors (1).

98557859 is an equidigital number, since it uses as much as digits as its factorization.

98557859 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4536000, while the sum is 56.

The square root of 98557859 is about 9927.6310870217. The cubic root of 98557859 is about 461.9167953582.

The spelling of 98557859 in words is "ninety-eight million, five hundred fifty-seven thousand, eight hundred fifty-nine".