434626021 has 2 divisors, whose sum is σ = 434626022. Its totient is φ = 434626020.

The previous prime is 434625979. The next prime is 434626043. The reversal of 434626021 is 120626434.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 339075396 + 95550625 = 18414^2 + 9775^2 .

It is a cyclic number.

It is not a de Polignac number, because 434626021 - 2⁹ = 434625509 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (434626051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 217313010 + 217313011.

It is an arithmetic number, because the mean of its divisors is an integer number (217313011).

Almost surely, 2^434626021 is an apocalyptic number.

It is an amenable number.

434626021 is a deficient number, since it is larger than the sum of its proper divisors (1).

434626021 is an equidigital number, since it uses as much as digits as its factorization.

434626021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6912, while the sum is 28.

The square root of 434626021 is about 20847.6862265336. The cubic root of 434626021 is about 757.4812862670.

The spelling of 434626021 in words is "four hundred thirty-four million, six hundred twenty-six thousand, twenty-one".