98423891 has 2 divisors, whose sum is σ = 98423892. Its totient is φ = 98423890.

The previous prime is 98423873. The next prime is 98423909. The reversal of 98423891 is 19832489.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (98423873) and next prime (98423909).

It is a cyclic number.

It is not a de Polignac number, because 98423891 - 2⁶ = 98423827 is a prime.

It is not a weakly prime, because it can be changed into another prime (98423851) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49211945 + 49211946.

It is an arithmetic number, because the mean of its divisors is an integer number (49211946).

Almost surely, 2^98423891 is an apocalyptic number.

98423891 is a deficient number, since it is larger than the sum of its proper divisors (1).

98423891 is an equidigital number, since it uses as much as digits as its factorization.

98423891 is an evil number, because the sum of its binary digits is even.

The product of its digits is 124416, while the sum is 44.

The square root of 98423891 is about 9920.8815636515. The cubic root of 98423891 is about 461.7074086099.

The spelling of 98423891 in words is "ninety-eight million, four hundred twenty-three thousand, eight hundred ninety-one".