14440821 has 4 divisors (see below), whose sum is σ = 19254432. Its totient is φ = 9627212.

The previous prime is 14440813. The next prime is 14440831. The reversal of 14440821 is 12804441.

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 14440821 - 2³ = 14440813 is a prime.

It is a super-2 number, since 2×14440821² = 417074622308082, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 14440791 and 14440800.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (14440831) 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, 2406801 + ... + 2406806.

It is an arithmetic number, because the mean of its divisors is an integer number (4813608).

Almost surely, 2^14440821 is an apocalyptic number.

It is an amenable number.

14440821 is a deficient number, since it is larger than the sum of its proper divisors (4813611).

14440821 is an equidigital number, since it uses as much as digits as its factorization.

14440821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4813610.

The product of its (nonzero) digits is 1024, while the sum is 24.

The square root of 14440821 is about 3800.1080247803. The cubic root of 14440821 is about 243.5177532744.

The spelling of 14440821 in words is "fourteen million, four hundred forty thousand, eight hundred twenty-one".