434221423 has 2 divisors, whose sum is σ = 434221424. Its totient is φ = 434221422.

The previous prime is 434221397. The next prime is 434221427. The reversal of 434221423 is 324122434.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 434221423 - 2¹³ = 434213231 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (434221427) 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 as a sum of consecutive naturals, namely, 217110711 + 217110712.

It is an arithmetic number, because the mean of its divisors is an integer number (217110712).

Almost surely, 2^434221423 is an apocalyptic number.

434221423 is a deficient number, since it is larger than the sum of its proper divisors (1).

434221423 is an equidigital number, since it uses as much as digits as its factorization.

434221423 is an odious number, because the sum of its binary digits is odd.

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

The square root of 434221423 is about 20837.9803004034. The cubic root of 434221423 is about 757.2461641557.

Adding to 434221423 its reverse (324122434), we get a palindrome (758343857).

The spelling of 434221423 in words is "four hundred thirty-four million, two hundred twenty-one thousand, four hundred twenty-three".