16316779 has 2 divisors, whose sum is σ = 16316780. Its totient is φ = 16316778.

The previous prime is 16316777. The next prime is 16316791. The reversal of 16316779 is 97761361.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (97761361) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 16316779 - 2¹ = 16316777 is a prime.

Together with 16316777, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (16316771) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8158389 + 8158390.

It is an arithmetic number, because the mean of its divisors is an integer number (8158390).

Almost surely, 2^16316779 is an apocalyptic number.

16316779 is a deficient number, since it is larger than the sum of its proper divisors (1).

16316779 is an equidigital number, since it uses as much as digits as its factorization.

16316779 is an evil number, because the sum of its binary digits is even.

The product of its digits is 47628, while the sum is 40.

The square root of 16316779 is about 4039.4032975181. The cubic root of 16316779 is about 253.6363396909.

The spelling of 16316779 in words is "sixteen million, three hundred sixteen thousand, seven hundred seventy-nine".