434807221 has 4 divisors (see below), whose sum is σ = 435386944. Its totient is φ = 434227500.

The previous prime is 434807201. The next prime is 434807251. The reversal of 434807221 is 122708434.

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 434807221 - 2⁵ = 434807189 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 (434807201) 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, 288735 + ... + 290236.

It is an arithmetic number, because the mean of its divisors is an integer number (108846736).

Almost surely, 2^434807221 is an apocalyptic number.

It is an amenable number.

434807221 is a deficient number, since it is larger than the sum of its proper divisors (579723).

434807221 is an equidigital number, since it uses as much as digits as its factorization.

434807221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 579722.

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

The square root of 434807221 is about 20852.0315796807. The cubic root of 434807221 is about 757.5865388539.

The spelling of 434807221 in words is "four hundred thirty-four million, eight hundred seven thousand, two hundred twenty-one".