434938813 has 2 divisors, whose sum is σ = 434938814. Its totient is φ = 434938812.

The previous prime is 434938793. The next prime is 434938849. The reversal of 434938813 is 318839434.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 434847609 + 91204 = 20853^2 + 302^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-434938813 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 434938813.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (434938883) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 217469406 + 217469407.

It is an arithmetic number, because the mean of its divisors is an integer number (217469407).

Almost surely, 2^434938813 is an apocalyptic number.

It is an amenable number.

434938813 is a deficient number, since it is larger than the sum of its proper divisors (1).

434938813 is an equidigital number, since it uses as much as digits as its factorization.

434938813 is an evil number, because the sum of its binary digits is even.

The product of its digits is 248832, while the sum is 43.

The square root of 434938813 is about 20855.1867169776. The cubic root of 434938813 is about 757.6629576034.

The spelling of 434938813 in words is "four hundred thirty-four million, nine hundred thirty-eight thousand, eight hundred thirteen".