14209021 has 4 divisors (see below), whose sum is σ = 14220000. Its totient is φ = 14198044.

The previous prime is 14208989. The next prime is 14209051. The reversal of 14209021 is 12090241.

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 a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 14209021 - 2⁵ = 14208989 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 14209021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (14209051) 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 in 3 ways as a sum of consecutive naturals, for example, 3241 + ... + 6238.

It is an arithmetic number, because the mean of its divisors is an integer number (3555000).

Almost surely, 2^14209021 is an apocalyptic number.

It is an amenable number.

14209021 is a deficient number, since it is larger than the sum of its proper divisors (10979).

14209021 is an equidigital number, since it uses as much as digits as its factorization.

14209021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10978.

The product of its (nonzero) digits is 144, while the sum is 19.

The square root of 14209021 is about 3769.4855086603. The cubic root of 14209021 is about 242.2077593403.

Adding to 14209021 its reverse (12090241), we get a palindrome (26299262).

The spelling of 14209021 in words is "fourteen million, two hundred nine thousand, twenty-one".