16280393 has 2 divisors, whose sum is σ = 16280394. Its totient is φ = 16280392.

The previous prime is 16280353. The next prime is 16280423. The reversal of 16280393 is 39308261.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13564489 + 2715904 = 3683^2 + 1648^2 .

It is an emirp because it is prime and its reverse (39308261) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 16280393 - 2¹⁰ = 16279369 is a prime.

It is equal to p_1047992 and since 16280393 and 1047992 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (16280323) 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, 8140196 + 8140197.

It is an arithmetic number, because the mean of its divisors is an integer number (8140197).

Almost surely, 2^16280393 is an apocalyptic number.

It is an amenable number.

16280393 is a deficient number, since it is larger than the sum of its proper divisors (1).

16280393 is an equidigital number, since it uses as much as digits as its factorization.

16280393 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7776, while the sum is 32.

The square root of 16280393 is about 4034.8969007894. The cubic root of 16280393 is about 253.4476651906.

The spelling of 16280393 in words is "sixteen million, two hundred eighty thousand, three hundred ninety-three".