99776659 has 2 divisors, whose sum is σ = 99776660. Its totient is φ = 99776658.

The previous prime is 99776609. The next prime is 99776669. The reversal of 99776659 is 95667799.

It is a strong prime.

It is an emirp because it is prime and its reverse (95667799) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 99776659 - 2²⁵ = 66222227 is a prime.

It is not a weakly prime, because it can be changed into another prime (99776609) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49888329 + 49888330.

It is an arithmetic number, because the mean of its divisors is an integer number (49888330).

Almost surely, 2^99776659 is an apocalyptic number.

99776659 is a deficient number, since it is larger than the sum of its proper divisors (1).

99776659 is an equidigital number, since it uses as much as digits as its factorization.

99776659 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6429780, while the sum is 58.

The square root of 99776659 is about 9988.8267078772. The cubic root of 99776659 is about 463.8130734243.

The spelling of 99776659 in words is "ninety-nine million, seven hundred seventy-six thousand, six hundred fifty-nine".