16343889 has 4 divisors (see below), whose sum is σ = 21791856. Its totient is φ = 10895924.

The previous prime is 16343881. The next prime is 16343891. The reversal of 16343889 is 98834361.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 98834361 = 3 ⋅32944787.

It is a cyclic number.

It is not a de Polignac number, because 16343889 - 2³ = 16343881 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 16343889.

It is not an unprimeable number, because it can be changed into a prime (16343881) 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 in 3 ways as a sum of consecutive naturals, for example, 2723979 + ... + 2723984.

It is an arithmetic number, because the mean of its divisors is an integer number (5447964).

Almost surely, 2^16343889 is an apocalyptic number.

It is an amenable number.

16343889 is a deficient number, since it is larger than the sum of its proper divisors (5447967).

16343889 is an equidigital number, since it uses as much as digits as its factorization.

16343889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5447966.

The product of its digits is 124416, while the sum is 42.

The square root of 16343889 is about 4042.7575984716. The cubic root of 16343889 is about 253.7767325246.

The spelling of 16343889 in words is "sixteen million, three hundred forty-three thousand, eight hundred eighty-nine".