8069779 has 2 divisors, whose sum is σ = 8069780. Its totient is φ = 8069778.

The previous prime is 8069777. The next prime is 8069783. The reversal of 8069779 is 9779608.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 8069779 - 2¹ = 8069777 is a prime.

Together with 8069777, it forms a pair of twin primes.

8069779 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (8069777) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4034889 + 4034890.

It is an arithmetic number, because the mean of its divisors is an integer number (4034890).

Almost surely, 2^8069779 is an apocalyptic number.

8069779 is a deficient number, since it is larger than the sum of its proper divisors (1).

8069779 is an equidigital number, since it uses as much as digits as its factorization.

8069779 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 190512, while the sum is 46.

The square root of 8069779 is about 2840.7356441598. The cubic root of 8069779 is about 200.5798091491.

It can be divided in two parts, 806 and 9779, that added together give a triangular number (10585 = T₁₄₅).

The spelling of 8069779 in words is "eight million, sixty-nine thousand, seven hundred seventy-nine".