34440221 has 4 divisors (see below), whose sum is σ = 34452000. Its totient is φ = 34428444.

The previous prime is 34440157. The next prime is 34440257. The reversal of 34440221 is 12204443.

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 34440221 - 2⁶ = 34440157 is a prime.

It is a super-2 number, since 2×34440221² = 2372257645057682, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 34440193 and 34440202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (34440121) 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, 2210 + ... + 8588.

It is an arithmetic number, because the mean of its divisors is an integer number (8613000).

Almost surely, 2^34440221 is an apocalyptic number.

It is an amenable number.

34440221 is a deficient number, since it is larger than the sum of its proper divisors (11779).

34440221 is an equidigital number, since it uses as much as digits as its factorization.

34440221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11778.

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 34440221 is about 5868.5791295679. The cubic root of 34440221 is about 325.3533702788.

Adding to 34440221 its reverse (12204443), we get a palindrome (46644664).

The spelling of 34440221 in words is "thirty-four million, four hundred forty thousand, two hundred twenty-one".