99538849 has 2 divisors, whose sum is σ = 99538850. Its totient is φ = 99538848.

The previous prime is 99538807. The next prime is 99538889. The reversal of 99538849 is 94883599.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 72165025 + 27373824 = 8495^2 + 5232^2 .

It is an emirp because it is prime and its reverse (94883599) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 99538849 - 2²¹ = 97441697 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 99538849.

It is not a weakly prime, because it can be changed into another prime (99538889) 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, 49769424 + 49769425.

It is an arithmetic number, because the mean of its divisors is an integer number (49769425).

Almost surely, 2^99538849 is an apocalyptic number.

It is an amenable number.

99538849 is a deficient number, since it is larger than the sum of its proper divisors (1).

99538849 is an equidigital number, since it uses as much as digits as its factorization.

99538849 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2799360, while the sum is 55.

The square root of 99538849 is about 9976.9158059994. The cubic root of 99538849 is about 463.4442926749. Note that the first 3 decimals are identical.

The spelling of 99538849 in words is "ninety-nine million, five hundred thirty-eight thousand, eight hundred forty-nine".