7922779 has 2 divisors, whose sum is σ = 7922780. Its totient is φ = 7922778.

The previous prime is 7922767. The next prime is 7922801. The reversal of 7922779 is 9772297.

7922779 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 7922779 - 2²¹ = 5825627 is a prime.

7922779 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (7902779) 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, 3961389 + 3961390.

It is an arithmetic number, because the mean of its divisors is an integer number (3961390).

Almost surely, 2^7922779 is an apocalyptic number.

7922779 is a deficient number, since it is larger than the sum of its proper divisors (1).

7922779 is an equidigital number, since it uses as much as digits as its factorization.

7922779 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 111132, while the sum is 43.

The square root of 7922779 is about 2814.7431499162. The cubic root of 7922779 is about 199.3544099766.

The spelling of 7922779 in words is "seven million, nine hundred twenty-two thousand, seven hundred seventy-nine".