434374437421 has 2 divisors, whose sum is σ = 434374437422. Its totient is φ = 434374437420.

The previous prime is 434374437403. The next prime is 434374437487. The reversal of 434374437421 is 124734473434.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 232179422500 + 202195014921 = 481850^2 + 449661^2 .

It is a cyclic number.

It is not a de Polignac number, because 434374437421 - 2¹⁹ = 434373913133 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (434374437401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 217187218710 + 217187218711.

It is an arithmetic number, because the mean of its divisors is an integer number (217187218711).

Almost surely, 2^434374437421 is an apocalyptic number.

It is an amenable number.

434374437421 is a deficient number, since it is larger than the sum of its proper divisors (1).

434374437421 is an equidigital number, since it uses as much as digits as its factorization.

434374437421 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2709504, while the sum is 46.

The spelling of 434374437421 in words is "four hundred thirty-four billion, three hundred seventy-four million, four hundred thirty-seven thousand, four hundred twenty-one".