434426189 has 2 divisors, whose sum is σ = 434426190. Its totient is φ = 434426188.

The previous prime is 434426147. The next prime is 434426197. The reversal of 434426189 is 981624434.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 433888900 + 537289 = 20830^2 + 733^2 .

It is a cyclic number.

It is not a de Polignac number, because 434426189 - 2²⁸ = 165990733 is a prime.

It is a super-2 number, since 2×434426189² = 377452227378127442, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (434426129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 217213094 + 217213095.

It is an arithmetic number, because the mean of its divisors is an integer number (217213095).

Almost surely, 2^434426189 is an apocalyptic number.

It is an amenable number.

434426189 is a deficient number, since it is larger than the sum of its proper divisors (1).

434426189 is an equidigital number, since it uses as much as digits as its factorization.

434426189 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 165888, while the sum is 41.

The square root of 434426189 is about 20842.8930093689. The cubic root of 434426189 is about 757.3651770929.

The spelling of 434426189 in words is "four hundred thirty-four million, four hundred twenty-six thousand, one hundred eighty-nine".