683404409 has 2 divisors, whose sum is σ = 683404410. Its totient is φ = 683404408.

The previous prime is 683404363. The next prime is 683404427. The reversal of 683404409 is 904404386.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 578546809 + 104857600 = 24053^2 + 10240^2 .

It is a cyclic number.

It is not a de Polignac number, because 683404409 - 2²⁰ = 682355833 is a prime.

It is not a weakly prime, because it can be changed into another prime (683404429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 341702204 + 341702205.

It is an arithmetic number, because the mean of its divisors is an integer number (341702205).

Almost surely, 2^683404409 is an apocalyptic number.

It is an amenable number.

683404409 is a deficient number, since it is larger than the sum of its proper divisors (1).

683404409 is an equidigital number, since it uses as much as digits as its factorization.

683404409 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 82944, while the sum is 38.

The square root of 683404409 is about 26142.0046859456. The cubic root of 683404409 is about 880.8310026401.

The spelling of 683404409 in words is "six hundred eighty-three million, four hundred four thousand, four hundred nine".