316804409 has 2 divisors, whose sum is σ = 316804410. Its totient is φ = 316804408.

The previous prime is 316804399. The next prime is 316804429. The reversal of 316804409 is 904408613.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 291453184 + 25351225 = 17072^2 + 5035^2 .

It is a cyclic number.

It is not a de Polignac number, because 316804409 - 2⁸ = 316804153 is a prime.

It is not a weakly prime, because it can be changed into another prime (316804429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 158402204 + 158402205.

It is an arithmetic number, because the mean of its divisors is an integer number (158402205).

Almost surely, 2^316804409 is an apocalyptic number.

It is an amenable number.

316804409 is a deficient number, since it is larger than the sum of its proper divisors (1).

316804409 is an equidigital number, since it uses as much as digits as its factorization.

316804409 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20736, while the sum is 35.

The square root of 316804409 is about 17799.0002247317. Note that the first 3 decimals coincide. The cubic root of 316804409 is about 681.7059308157.

The spelling of 316804409 in words is "three hundred sixteen million, eight hundred four thousand, four hundred nine".