98600891 has 2 divisors, whose sum is σ = 98600892. Its totient is φ = 98600890.

The previous prime is 98600857. The next prime is 98600921. The reversal of 98600891 is 19800689.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-98600891 is a prime.

It is a Chen prime.

It is equal to p_5685638 and since 98600891 and 5685638 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (98603891) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49300445 + 49300446.

It is an arithmetic number, because the mean of its divisors is an integer number (49300446).

Almost surely, 2^98600891 is an apocalyptic number.

98600891 is a deficient number, since it is larger than the sum of its proper divisors (1).

98600891 is an equidigital number, since it uses as much as digits as its factorization.

98600891 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 31104, while the sum is 41.

The square root of 98600891 is about 9929.7981349069. The cubic root of 98600891 is about 461.9840124275.

The spelling of 98600891 in words is "ninety-eight million, six hundred thousand, eight hundred ninety-one".