99878227 has 2 divisors, whose sum is σ = 99878228. Its totient is φ = 99878226.

The previous prime is 99878221. The next prime is 99878237. The reversal of 99878227 is 72287899.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 99878227 - 2⁷ = 99878099 is a prime.

It is not a weakly prime, because it can be changed into another prime (99878221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49939113 + 49939114.

It is an arithmetic number, because the mean of its divisors is an integer number (49939114).

Almost surely, 2^99878227 is an apocalyptic number.

99878227 is a deficient number, since it is larger than the sum of its proper divisors (1).

99878227 is an equidigital number, since it uses as much as digits as its factorization.

99878227 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1016064, while the sum is 52.

The square root of 99878227 is about 9993.9094952876. The cubic root of 99878227 is about 463.9704001010.

The spelling of 99878227 in words is "ninety-nine million, eight hundred seventy-eight thousand, two hundred twenty-seven".