432434221 has 4 divisors (see below), whose sum is σ = 446383744. Its totient is φ = 418484700.

The previous prime is 432434213. The next prime is 432434251. The reversal of 432434221 is 122434234.

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 432434221 - 2³ = 432434213 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 (432434251) 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, 6974715 + ... + 6974776.

It is an arithmetic number, because the mean of its divisors is an integer number (111595936).

Almost surely, 2^432434221 is an apocalyptic number.

It is an amenable number.

432434221 is a deficient number, since it is larger than the sum of its proper divisors (13949523).

432434221 is a wasteful number, since it uses less digits than its factorization.

432434221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13949522.

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

The square root of 432434221 is about 20795.0528010871. The cubic root of 432434221 is about 756.2058248358.

Adding to 432434221 its reverse (122434234), we get a palindrome (554868455).

The spelling of 432434221 in words is "four hundred thirty-two million, four hundred thirty-four thousand, two hundred twenty-one".