16069321 has 2 divisors, whose sum is σ = 16069322. Its totient is φ = 16069320.

The previous prime is 16069309. The next prime is 16069343. The reversal of 16069321 is 12396061.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12702096 + 3367225 = 3564^2 + 1835^2 .

It is an emirp because it is prime and its reverse (12396061) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 16069321 - 2⁵ = 16069289 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 16069321.

It is not a weakly prime, because it can be changed into another prime (16069621) 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, 8034660 + 8034661.

It is an arithmetic number, because the mean of its divisors is an integer number (8034661).

Almost surely, 2^16069321 is an apocalyptic number.

It is an amenable number.

16069321 is a deficient number, since it is larger than the sum of its proper divisors (1).

16069321 is an equidigital number, since it uses as much as digits as its factorization.

16069321 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1944, while the sum is 28.

The square root of 16069321 is about 4008.6557597279. The cubic root of 16069321 is about 252.3475981288.

The spelling of 16069321 in words is "sixteen million, sixty-nine thousand, three hundred twenty-one".