409396159609 has 2 divisors, whose sum is σ = 409396159610. Its totient is φ = 409396159608.

The previous prime is 409396159591. The next prime is 409396159619. The reversal of 409396159609 is 906951693904.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 402879633984 + 6516525625 = 634728^2 + 80725^2 .

It is a cyclic number.

It is not a de Polignac number, because 409396159609 - 2⁵ = 409396159577 is a prime.

It is not a weakly prime, because it can be changed into another prime (409396159619) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 204698079804 + 204698079805.

It is an arithmetic number, because the mean of its divisors is an integer number (204698079805).

Almost surely, 2^409396159609 is an apocalyptic number.

It is an amenable number.

409396159609 is a deficient number, since it is larger than the sum of its proper divisors (1).

409396159609 is an equidigital number, since it uses as much as digits as its factorization.

409396159609 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 14171760, while the sum is 61.

The spelling of 409396159609 in words is "four hundred nine billion, three hundred ninety-six million, one hundred fifty-nine thousand, six hundred nine".