434342621 has 2 divisors, whose sum is σ = 434342622. Its totient is φ = 434342620.

The previous prime is 434342539. The next prime is 434342633. The reversal of 434342621 is 126243434.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 243516025 + 190826596 = 15605^2 + 13814^2 .

It is a cyclic number.

It is not a de Polignac number, because 434342621 - 2¹⁴ = 434326237 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (434342681) 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, 217171310 + 217171311.

It is an arithmetic number, because the mean of its divisors is an integer number (217171311).

Almost surely, 2^434342621 is an apocalyptic number.

It is an amenable number.

434342621 is a deficient number, since it is larger than the sum of its proper divisors (1).

434342621 is an equidigital number, since it uses as much as digits as its factorization.

434342621 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 13824, while the sum is 29.

The square root of 434342621 is about 20840.8882008421. Note that the first 3 decimals coincide. The cubic root of 434342621 is about 757.3166106900.

It can be divided in two parts, 4343 and 42621, that added together give a palindrome (46964).

The spelling of 434342621 in words is "four hundred thirty-four million, three hundred forty-two thousand, six hundred twenty-one".