412305809 has 2 divisors, whose sum is σ = 412305810. Its totient is φ = 412305808.

The previous prime is 412305793. The next prime is 412305821. The reversal of 412305809 is 908503214.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 308775184 + 103530625 = 17572^2 + 10175^2 .

It is a cyclic number.

It is not a de Polignac number, because 412305809 - 2⁴ = 412305793 is a prime.

It is not a weakly prime, because it can be changed into another prime (412305869) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 206152904 + 206152905.

It is an arithmetic number, because the mean of its divisors is an integer number (206152905).

Almost surely, 2^412305809 is an apocalyptic number.

It is an amenable number.

412305809 is a deficient number, since it is larger than the sum of its proper divisors (1).

412305809 is an equidigital number, since it uses as much as digits as its factorization.

412305809 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8640, while the sum is 32.

The square root of 412305809 is about 20305.3147968703. The cubic root of 412305809 is about 744.2859449540.

The spelling of 412305809 in words is "four hundred twelve million, three hundred five thousand, eight hundred nine".