98995993 has 2 divisors, whose sum is σ = 98995994. Its totient is φ = 98995992.

The previous prime is 98995961. The next prime is 98995999. The reversal of 98995993 is 39959989.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 51151104 + 47844889 = 7152^2 + 6917^2 .

It is an emirp because it is prime and its reverse (39959989) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 98995993 - 2⁵ = 98995961 is a prime.

It is not a weakly prime, because it can be changed into another prime (98995999) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49497996 + 49497997.

It is an arithmetic number, because the mean of its divisors is an integer number (49497997).

Almost surely, 2^98995993 is an apocalyptic number.

It is an amenable number.

98995993 is a deficient number, since it is larger than the sum of its proper divisors (1).

98995993 is an equidigital number, since it uses as much as digits as its factorization.

98995993 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7085880, while the sum is 61.

The square root of 98995993 is about 9949.6730097024. The cubic root of 98995993 is about 462.6002595403.

The spelling of 98995993 in words is "ninety-eight million, nine hundred ninety-five thousand, nine hundred ninety-three".