16224779 has 2 divisors, whose sum is σ = 16224780. Its totient is φ = 16224778.

The previous prime is 16224763. The next prime is 16224797. The reversal of 16224779 is 97742261.

Together with next prime (16224797) 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 16224779 - 2⁴ = 16224763 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (16224709) 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, 8112389 + 8112390.

It is an arithmetic number, because the mean of its divisors is an integer number (8112390).

Almost surely, 2^16224779 is an apocalyptic number.

16224779 is a deficient number, since it is larger than the sum of its proper divisors (1).

16224779 is an equidigital number, since it uses as much as digits as its factorization.

16224779 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 42336, while the sum is 38.

The square root of 16224779 is about 4027.9993793445. Note that the first 3 decimals coincide. The cubic root of 16224779 is about 253.1587426236.

The spelling of 16224779 in words is "sixteen million, two hundred twenty-four thousand, seven hundred seventy-nine".