16479779 has 2 divisors, whose sum is σ = 16479780. Its totient is φ = 16479778.

The previous prime is 16479773. The next prime is 16479797. The reversal of 16479779 is 97797461.

It is a happy number.

Together with next prime (16479797) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 16479779 - 2²⁰ = 15431203 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (16479773) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8239889 + 8239890.

It is an arithmetic number, because the mean of its divisors is an integer number (8239890).

Almost surely, 2^16479779 is an apocalyptic number.

16479779 is a deficient number, since it is larger than the sum of its proper divisors (1).

16479779 is an equidigital number, since it uses as much as digits as its factorization.

16479779 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 666792, while the sum is 50.

The square root of 16479779 is about 4059.5294062243. The cubic root of 16479779 is about 254.4781278687.

The spelling of 16479779 in words is "sixteen million, four hundred seventy-nine thousand, seven hundred seventy-nine".