409235816880929 has 2 divisors, whose sum is σ = 409235816880930. Its totient is φ = 409235816880928.

The previous prime is 409235816880851. The next prime is 409235816880991. The reversal of 409235816880929 is 929088618532904.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 329409722523904 + 79826094357025 = 18149648^2 + 8934545^2 .

It is a cyclic number.

It is not a de Polignac number, because 409235816880929 - 2²⁰ = 409235815832353 is a prime.

It is not a weakly prime, because it can be changed into another prime (409235816880229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 204617908440464 + 204617908440465.

It is an arithmetic number, because the mean of its divisors is an integer number (204617908440465).

Almost surely, 2^{409235816880929} is an apocalyptic number.

It is an amenable number.

409235816880929 is a deficient number, since it is larger than the sum of its proper divisors (1).

409235816880929 is an equidigital number, since it uses as much as digits as its factorization.

409235816880929 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 537477120, while the sum is 74.

The spelling of 409235816880929 in words is "four hundred nine trillion, two hundred thirty-five billion, eight hundred sixteen million, eight hundred eighty thousand, nine hundred twenty-nine".