99633197 has 2 divisors, whose sum is σ = 99633198. Its totient is φ = 99633196.

The previous prime is 99633173. The next prime is 99633199. The reversal of 99633197 is 79133699.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 79103236 + 20529961 = 8894^2 + 4531^2 .

It is an emirp because it is prime and its reverse (79133699) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 99633197 - 2¹⁸ = 99371053 is a prime.

Together with 99633199, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (99633199) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49816598 + 49816599.

It is an arithmetic number, because the mean of its divisors is an integer number (49816599).

Almost surely, 2^99633197 is an apocalyptic number.

It is an amenable number.

99633197 is a deficient number, since it is larger than the sum of its proper divisors (1).

99633197 is an equidigital number, since it uses as much as digits as its factorization.

99633197 is an evil number, because the sum of its binary digits is even.

The product of its digits is 275562, while the sum is 47.

The square root of 99633197 is about 9981.6430010294. The cubic root of 99633197 is about 463.5906718186.

The spelling of 99633197 in words is "ninety-nine million, six hundred thirty-three thousand, one hundred ninety-seven".