16398859 has 2 divisors, whose sum is σ = 16398860. Its totient is φ = 16398858.

The previous prime is 16398857. The next prime is 16398869. The reversal of 16398859 is 95889361.

It is a weak prime.

It is an emirp because it is prime and its reverse (95889361) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 16398859 - 2¹ = 16398857 is a prime.

Together with 16398857, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (16398857) 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, 8199429 + 8199430.

It is an arithmetic number, because the mean of its divisors is an integer number (8199430).

Almost surely, 2^16398859 is an apocalyptic number.

16398859 is a deficient number, since it is larger than the sum of its proper divisors (1).

16398859 is an equidigital number, since it uses as much as digits as its factorization.

16398859 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 466560, while the sum is 49.

The square root of 16398859 is about 4049.5504688792. The cubic root of 16398859 is about 254.0609263398.

The spelling of 16398859 in words is "sixteen million, three hundred ninety-eight thousand, eight hundred fifty-nine".