16823399 has 2 divisors, whose sum is σ = 16823400. Its totient is φ = 16823398.

The previous prime is 16823383. The next prime is 16823447. The reversal of 16823399 is 99332861.

It is a weak prime.

It is an emirp because it is prime and its reverse (99332861) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 16823399 - 2⁴ = 16823383 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16813399) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8411699 + 8411700.

It is an arithmetic number, because the mean of its divisors is an integer number (8411700).

Almost surely, 2^16823399 is an apocalyptic number.

16823399 is a deficient number, since it is larger than the sum of its proper divisors (1).

16823399 is an equidigital number, since it uses as much as digits as its factorization.

16823399 is an evil number, because the sum of its binary digits is even.

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

The square root of 16823399 is about 4101.6336989058. The cubic root of 16823399 is about 256.2346836771.

The spelling of 16823399 in words is "sixteen million, eight hundred twenty-three thousand, three hundred ninety-nine".