98216891 has 2 divisors, whose sum is σ = 98216892. Its totient is φ = 98216890.

The previous prime is 98216873. The next prime is 98216917. The reversal of 98216891 is 19861289.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 98216891 - 2¹⁴ = 98200507 is a prime.

It is not a weakly prime, because it can be changed into another prime (98216801) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49108445 + 49108446.

It is an arithmetic number, because the mean of its divisors is an integer number (49108446).

Almost surely, 2^98216891 is an apocalyptic number.

98216891 is a deficient number, since it is larger than the sum of its proper divisors (1).

98216891 is an equidigital number, since it uses as much as digits as its factorization.

98216891 is an evil number, because the sum of its binary digits is even.

The product of its digits is 62208, while the sum is 44.

The square root of 98216891 is about 9910.4435319515. The cubic root of 98216891 is about 461.3835017728.

The spelling of 98216891 in words is "ninety-eight million, two hundred sixteen thousand, eight hundred ninety-one".