16398317 has 12 divisors (see below), whose sum is σ = 17991036. Its totient is φ = 14857920.

The previous prime is 16398299. The next prime is 16398323. The reversal of 16398317 is 71389361.

It can be written as a sum of positive squares in 2 ways, for example, as 6482116 + 9916201 = 2546^2 + 3149^2 .

It is not a de Polignac number, because 16398317 - 2¹⁶ = 16332781 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16398337) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 58217 + ... + 58497.

It is an arithmetic number, because the mean of its divisors is an integer number (1499253).

Almost surely, 2^16398317 is an apocalyptic number.

It is an amenable number.

16398317 is a deficient number, since it is larger than the sum of its proper divisors (1592719).

16398317 is an equidigital number, since it uses as much as digits as its factorization.

16398317 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 428 (or 361 counting only the distinct ones).

The product of its digits is 27216, while the sum is 38.

The square root of 16398317 is about 4049.4835473181. The cubic root of 16398317 is about 254.0581273130.

The spelling of 16398317 in words is "sixteen million, three hundred ninety-eight thousand, three hundred seventeen".