14219921 has 4 divisors (see below), whose sum is σ = 14400000. Its totient is φ = 14039844.

The previous prime is 14219873. The next prime is 14219927. The reversal of 14219921 is 12991241.

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: 12991241 = 89 ⋅145969.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-14219921 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (14219927) 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, 89921 + ... + 90078.

It is an arithmetic number, because the mean of its divisors is an integer number (3600000).

Almost surely, 2^14219921 is an apocalyptic number.

It is an amenable number.

14219921 is a deficient number, since it is larger than the sum of its proper divisors (180079).

14219921 is an equidigital number, since it uses as much as digits as its factorization.

14219921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 180078.

The product of its digits is 1296, while the sum is 29.

The square root of 14219921 is about 3770.9310521408. The cubic root of 14219921 is about 242.2696775114.

The spelling of 14219921 in words is "fourteen million, two hundred nineteen thousand, nine hundred twenty-one".