16422909 has 4 divisors (see below), whose sum is σ = 21897216. Its totient is φ = 10948604.

The previous prime is 16422907. The next prime is 16422937. The reversal of 16422909 is 90922461.

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 16422909 - 2¹ = 16422907 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 16422909.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16422907) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2737149 + ... + 2737154.

It is an arithmetic number, because the mean of its divisors is an integer number (5474304).

Almost surely, 2^16422909 is an apocalyptic number.

It is an amenable number.

16422909 is a deficient number, since it is larger than the sum of its proper divisors (5474307).

16422909 is an equidigital number, since it uses as much as digits as its factorization.

16422909 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5474306.

The product of its (nonzero) digits is 7776, while the sum is 33.

The square root of 16422909 is about 4052.5188463473. The cubic root of 16422909 is about 254.1850646660.

The spelling of 16422909 in words is "sixteen million, four hundred twenty-two thousand, nine hundred nine".