943434809 has 2 divisors, whose sum is σ = 943434810. Its totient is φ = 943434808.

The previous prime is 943434803. The next prime is 943434841. The reversal of 943434809 is 908434349.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 836829184 + 106605625 = 28928^2 + 10325^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-943434809 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 943434809.

It is not a weakly prime, because it can be changed into another prime (943434803) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 471717404 + 471717405.

It is an arithmetic number, because the mean of its divisors is an integer number (471717405).

Almost surely, 2^943434809 is an apocalyptic number.

It is an amenable number.

943434809 is a deficient number, since it is larger than the sum of its proper divisors (1).

943434809 is an equidigital number, since it uses as much as digits as its factorization.

943434809 is an evil number, because the sum of its binary digits is even.

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

The square root of 943434809 is about 30715.3839142538. The cubic root of 943434809 is about 980.7778112792. Note that the first 3 decimals are identical.

The spelling of 943434809 in words is "nine hundred forty-three million, four hundred thirty-four thousand, eight hundred nine".