99798757 has 2 divisors, whose sum is σ = 99798758. Its totient is φ = 99798756.

The previous prime is 99798739. The next prime is 99798763. The reversal of 99798757 is 75789799.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 90744676 + 9054081 = 9526^2 + 3009^2 .

It is an emirp because it is prime and its reverse (75789799) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 99798757 - 2¹⁵ = 99765989 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 99798695 and 99798704.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (99598757) 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, 49899378 + 49899379.

It is an arithmetic number, because the mean of its divisors is an integer number (49899379).

Almost surely, 2^99798757 is an apocalyptic number.

It is an amenable number.

99798757 is a deficient number, since it is larger than the sum of its proper divisors (1).

99798757 is an equidigital number, since it uses as much as digits as its factorization.

99798757 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10001880, while the sum is 61.

The square root of 99798757 is about 9989.9327825566. The cubic root of 99798757 is about 463.8473118419.

The spelling of 99798757 in words is "ninety-nine million, seven hundred ninety-eight thousand, seven hundred fifty-seven".