434204221 has 4 divisors (see below), whose sum is σ = 473677344. Its totient is φ = 394731100.

The previous prime is 434204209. The next prime is 434204231. The reversal of 434204221 is 122402434.

It is a happy number.

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 434204221 - 2⁹ = 434203709 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 434204192 and 434204201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (434204231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19736545 + ... + 19736566.

It is an arithmetic number, because the mean of its divisors is an integer number (118419336).

Almost surely, 2^434204221 is an apocalyptic number.

It is an amenable number.

434204221 is a deficient number, since it is larger than the sum of its proper divisors (39473123).

434204221 is a wasteful number, since it uses less digits than its factorization.

434204221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39473122.

The product of its (nonzero) digits is 1536, while the sum is 22.

The square root of 434204221 is about 20837.5675403824. The cubic root of 434204221 is about 757.2361644030.

Adding to 434204221 its reverse (122402434), we get a palindrome (556606655).

The spelling of 434204221 in words is "four hundred thirty-four million, two hundred four thousand, two hundred twenty-one".