434432221 has 4 divisors (see below), whose sum is σ = 440916352. Its totient is φ = 427948092.

The previous prime is 434432183. The next prime is 434432227. The reversal of 434432221 is 122234434.

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 434432221 - 2¹⁹ = 433907933 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 (434432227) 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, 3241965 + ... + 3242098.

It is an arithmetic number, because the mean of its divisors is an integer number (110229088).

Almost surely, 2^434432221 is an apocalyptic number.

It is an amenable number.

434432221 is a deficient number, since it is larger than the sum of its proper divisors (6484131).

434432221 is an equidigital number, since it uses as much as digits as its factorization.

434432221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6484130.

The product of its digits is 4608, while the sum is 25.

The square root of 434432221 is about 20843.0377104682. The cubic root of 434432221 is about 757.3686824107.

Adding to 434432221 its reverse (122234434), we get a palindrome (556666655).

The spelling of 434432221 in words is "four hundred thirty-four million, four hundred thirty-two thousand, two hundred twenty-one".