434100221 has 4 divisors (see below), whose sum is σ = 434168700. Its totient is φ = 434031744.

The previous prime is 434100143. The next prime is 434100269. The reversal of 434100221 is 122001434.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 315595225 + 118504996 = 17765^2 + 10886^2 .

It is a cyclic number.

It is not a de Polignac number, because 434100221 - 2²⁶ = 366991357 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 434100221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (434100281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23636 + ... + 37773.

It is an arithmetic number, because the mean of its divisors is an integer number (108542175).

Almost surely, 2^434100221 is an apocalyptic number.

It is an amenable number.

434100221 is a deficient number, since it is larger than the sum of its proper divisors (68479).

434100221 is an equidigital number, since it uses as much as digits as its factorization.

434100221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68478.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 434100221 is about 20835.0718981241. The cubic root of 434100221 is about 757.1757021860.

Adding to 434100221 its reverse (122001434), we get a palindrome (556101655).

The spelling of 434100221 in words is "four hundred thirty-four million, one hundred thousand, two hundred twenty-one".