434866391 has 2 divisors, whose sum is σ = 434866392. Its totient is φ = 434866390.

The previous prime is 434866379. The next prime is 434866427. The reversal of 434866391 is 193668434.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 434866391 - 2¹⁴ = 434850007 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (434866301) 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, 217433195 + 217433196.

It is an arithmetic number, because the mean of its divisors is an integer number (217433196).

Almost surely, 2^434866391 is an apocalyptic number.

434866391 is a deficient number, since it is larger than the sum of its proper divisors (1).

434866391 is an equidigital number, since it uses as much as digits as its factorization.

434866391 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 373248, while the sum is 44.

The square root of 434866391 is about 20853.4503380136. The cubic root of 434866391 is about 757.6209022530.

The spelling of 434866391 in words is "four hundred thirty-four million, eight hundred sixty-six thousand, three hundred ninety-one".