434401221 has 8 divisors (see below), whose sum is σ = 613272384. Its totient is φ = 272565440.

The previous prime is 434401193. The next prime is 434401241. The reversal of 434401221 is 122104434.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-434401221 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (434401241) 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 7 ways as a sum of consecutive naturals, for example, 4258785 + ... + 4258886.

It is an arithmetic number, because the mean of its divisors is an integer number (76659048).

Almost surely, 2^434401221 is an apocalyptic number.

It is an amenable number.

434401221 is a deficient number, since it is larger than the sum of its proper divisors (178871163).

434401221 is a wasteful number, since it uses less digits than its factorization.

434401221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8517691.

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 434401221 is about 20842.2940436028. The cubic root of 434401221 is about 757.3506673353.

Adding to 434401221 its reverse (122104434), we get a palindrome (556505655).

The spelling of 434401221 in words is "four hundred thirty-four million, four hundred one thousand, two hundred twenty-one".