304105409 has 2 divisors, whose sum is σ = 304105410. Its totient is φ = 304105408.

The previous prime is 304105387. The next prime is 304105421. The reversal of 304105409 is 904501403.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 276490384 + 27615025 = 16628^2 + 5255^2 .

It is a cyclic number.

It is not a de Polignac number, because 304105409 - 2¹² = 304101313 is a prime.

It is not a weakly prime, because it can be changed into another prime (304005409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 152052704 + 152052705.

It is an arithmetic number, because the mean of its divisors is an integer number (152052705).

Almost surely, 2^304105409 is an apocalyptic number.

It is an amenable number.

304105409 is a deficient number, since it is larger than the sum of its proper divisors (1).

304105409 is an equidigital number, since it uses as much as digits as its factorization.

304105409 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 304105409 is about 17438.6183225621. The cubic root of 304105409 is about 672.4727878322.

The spelling of 304105409 in words is "three hundred four million, one hundred five thousand, four hundred nine".