214444421 has 4 divisors (see below), whose sum is σ = 217645152. Its totient is φ = 211243692.

The previous prime is 214444411. The next prime is 214444441. The reversal of 214444421 is 124444412.

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 a de Polignac number, because none of the positive numbers 2^k-214444421 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (214444411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1600265 + ... + 1600398.

It is an arithmetic number, because the mean of its divisors is an integer number (54411288).

Almost surely, 2^214444421 is an apocalyptic number.

It is an amenable number.

214444421 is a deficient number, since it is larger than the sum of its proper divisors (3200731).

214444421 is an equidigital number, since it uses as much as digits as its factorization.

214444421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3200730.

The product of its digits is 4096, while the sum is 26.

The square root of 214444421 is about 14643.9209571754. The cubic root of 214444421 is about 598.5561774885.

Adding to 214444421 its reverse (124444412), we get a palindrome (338888833).

Subtracting from 214444421 its reverse (124444412), we obtain a palindrome (90000009).

The spelling of 214444421 in words is "two hundred fourteen million, four hundred forty-four thousand, four hundred twenty-one".