34784221 has 4 divisors (see below), whose sum is σ = 35203392. Its totient is φ = 34365052.

The previous prime is 34784219. The next prime is 34784237. The reversal of 34784221 is 12248743.

34784221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 34784221 - 2¹ = 34784219 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 (34784521) 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, 209461 + ... + 209626.

It is an arithmetic number, because the mean of its divisors is an integer number (8800848).

Almost surely, 2^34784221 is an apocalyptic number.

It is an amenable number.

34784221 is a deficient number, since it is larger than the sum of its proper divisors (419171).

34784221 is an equidigital number, since it uses as much as digits as its factorization.

34784221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 419170.

The product of its digits is 10752, while the sum is 31.

The square root of 34784221 is about 5897.8149343634. The cubic root of 34784221 is about 326.4330282492.

The spelling of 34784221 in words is "thirty-four million, seven hundred eighty-four thousand, two hundred twenty-one".