80228779 has 2 divisors, whose sum is σ = 80228780. Its totient is φ = 80228778.

The previous prime is 80228777. The next prime is 80228789. The reversal of 80228779 is 97782208.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 80228779 - 2¹ = 80228777 is a prime.

Together with 80228777, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (80228777) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40114389 + 40114390.

It is an arithmetic number, because the mean of its divisors is an integer number (40114390).

Almost surely, 2^80228779 is an apocalyptic number.

80228779 is a deficient number, since it is larger than the sum of its proper divisors (1).

80228779 is an equidigital number, since it uses as much as digits as its factorization.

80228779 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 112896, while the sum is 43.

The square root of 80228779 is about 8957.0519145531. The cubic root of 80228779 is about 431.2972882682.

The spelling of 80228779 in words is "eighty million, two hundred twenty-eight thousand, seven hundred seventy-nine".