16389293 has 2 divisors, whose sum is σ = 16389294. Its totient is φ = 16389292.

The previous prime is 16389287. The next prime is 16389311. The reversal of 16389293 is 39298361.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16337764 + 51529 = 4042^2 + 227^2 .

It is an emirp because it is prime and its reverse (39298361) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 16389293 - 2⁴ = 16389277 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a plaindrome in base 14.

It is a self number, because there is not a number n which added to its sum of digits gives 16389293.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16389203) 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, 8194646 + 8194647.

It is an arithmetic number, because the mean of its divisors is an integer number (8194647).

Almost surely, 2^16389293 is an apocalyptic number.

It is an amenable number.

16389293 is a deficient number, since it is larger than the sum of its proper divisors (1).

16389293 is an equidigital number, since it uses as much as digits as its factorization.

16389293 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 69984, while the sum is 41.

The square root of 16389293 is about 4048.3691778295. The cubic root of 16389293 is about 254.0115160009.

The spelling of 16389293 in words is "sixteen million, three hundred eighty-nine thousand, two hundred ninety-three".