434434321 has 4 divisors (see below), whose sum is σ = 435529012. Its totient is φ = 433339632.

The previous prime is 434434309. The next prime is 434434331. The reversal of 434434321 is 123434434.

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 137733696 + 296700625 = 11736^2 + 17225^2 .

It is a cyclic number.

It is not a de Polignac number, because 434434321 - 2¹³ = 434426129 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 434434321.

It is not an unprimeable number, because it can be changed into a prime (434434331) 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, 546750 + ... + 547543.

It is an arithmetic number, because the mean of its divisors is an integer number (108882253).

Almost surely, 2^434434321 is an apocalyptic number.

It is an amenable number.

434434321 is a deficient number, since it is larger than the sum of its proper divisors (1094691).

434434321 is a wasteful number, since it uses less digits than its factorization.

434434321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1094690.

The product of its digits is 13824, while the sum is 28.

The square root of 434434321 is about 20843.0880869414. The cubic root of 434434321 is about 757.3699027558.

Adding to 434434321 its reverse (123434434), we get a palindrome (557868755).

The spelling of 434434321 in words is "four hundred thirty-four million, four hundred thirty-four thousand, three hundred twenty-one".