98011091 has 2 divisors, whose sum is σ = 98011092. Its totient is φ = 98011090.

The previous prime is 98011087. The next prime is 98011127. The reversal of 98011091 is 19011089.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 98011091 - 2² = 98011087 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (98011021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49005545 + 49005546.

It is an arithmetic number, because the mean of its divisors is an integer number (49005546).

Almost surely, 2^98011091 is an apocalyptic number.

98011091 is a deficient number, since it is larger than the sum of its proper divisors (1).

98011091 is an equidigital number, since it uses as much as digits as its factorization.

98011091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 648, while the sum is 29.

The square root of 98011091 is about 9900.0551008568. The cubic root of 98011091 is about 461.0610211854.

The spelling of 98011091 in words is "ninety-eight million, eleven thousand, ninety-one".