16573399 has 2 divisors, whose sum is σ = 16573400. Its totient is φ = 16573398.

The previous prime is 16573397. The next prime is 16573423. The reversal of 16573399 is 99337561.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 16573399 - 2¹ = 16573397 is a prime.

Together with 16573397, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16573397) 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 as a sum of consecutive naturals, namely, 8286699 + 8286700.

It is an arithmetic number, because the mean of its divisors is an integer number (8286700).

Almost surely, 2^16573399 is an apocalyptic number.

16573399 is a deficient number, since it is larger than the sum of its proper divisors (1).

16573399 is an equidigital number, since it uses as much as digits as its factorization.

16573399 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 153090, while the sum is 43.

The square root of 16573399 is about 4071.0439693032. The cubic root of 16573399 is about 254.9591066040.

The spelling of 16573399 in words is "sixteen million, five hundred seventy-three thousand, three hundred ninety-nine".