3404789523209 has 2 divisors, whose sum is σ = 3404789523210. Its totient is φ = 3404789523208.

The previous prime is 3404789523197. The next prime is 3404789523211. The reversal of 3404789523209 is 9023259874043.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2069147033209 + 1335642490000 = 1438453^2 + 1155700^2 .

It is a cyclic number.

It is not a de Polignac number, because 3404789523209 - 2²⁸ = 3404521087753 is a prime.

Together with 3404789523211, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (3404789523299) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1702394761604 + 1702394761605.

It is an arithmetic number, because the mean of its divisors is an integer number (1702394761605).

Almost surely, 2^{3404789523209} is an apocalyptic number.

It is an amenable number.

3404789523209 is a deficient number, since it is larger than the sum of its proper divisors (1).

3404789523209 is an equidigital number, since it uses as much as digits as its factorization.

3404789523209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13063680, while the sum is 56.

The spelling of 3404789523209 in words is "three trillion, four hundred four billion, seven hundred eighty-nine million, five hundred twenty-three thousand, two hundred nine".