16022209 has 4 divisors (see below), whose sum is σ = 18311104. Its totient is φ = 13733316.

The previous prime is 16022203. The next prime is 16022213. The reversal of 16022209 is 90222061.

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.

It is a cyclic number.

It is not a de Polignac number, because 16022209 - 2⁷ = 16022081 is a prime.

It is a super-2 number, since 2×16022209² = 513422362479362, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 16022209.

It is not an unprimeable number, because it can be changed into a prime (16022203) 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, 1144437 + ... + 1144450.

It is an arithmetic number, because the mean of its divisors is an integer number (4577776).

Almost surely, 2^16022209 is an apocalyptic number.

It is an amenable number.

16022209 is a deficient number, since it is larger than the sum of its proper divisors (2288895).

16022209 is an equidigital number, since it uses as much as digits as its factorization.

16022209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2288894.

The product of its (nonzero) digits is 432, while the sum is 22.

The square root of 16022209 is about 4002.7751623093. The cubic root of 16022209 is about 252.1007460200.

The spelling of 16022209 in words is "sixteen million, twenty-two thousand, two hundred nine".