16797779 has 2 divisors, whose sum is σ = 16797780. Its totient is φ = 16797778.

The previous prime is 16797763. The next prime is 16797817. The reversal of 16797779 is 97779761.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 16797779 - 2⁴ = 16797763 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 16797779.

It is not a weakly prime, because it can be changed into another prime (16797709) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8398889 + 8398890.

It is an arithmetic number, because the mean of its divisors is an integer number (8398890).

Almost surely, 2^16797779 is an apocalyptic number.

16797779 is a deficient number, since it is larger than the sum of its proper divisors (1).

16797779 is an equidigital number, since it uses as much as digits as its factorization.

16797779 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1166886, while the sum is 53.

The square root of 16797779 is about 4098.5093631710. The cubic root of 16797779 is about 256.1045461258.

It can be divided in two parts, 16797 and 779, that added together give a cube (17576 = 26³).

The spelling of 16797779 in words is "sixteen million, seven hundred ninety-seven thousand, seven hundred seventy-nine".