775230409 has 2 divisors, whose sum is σ = 775230410. Its totient is φ = 775230408.

The previous prime is 775230403. The next prime is 775230437. The reversal of 775230409 is 904032577.

775230409 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 575856009 + 199374400 = 23997^2 + 14120^2 .

It is a cyclic number.

It is not a de Polignac number, because 775230409 - 2¹¹ = 775228361 is a prime.

It is not a weakly prime, because it can be changed into another prime (775230403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 387615204 + 387615205.

It is an arithmetic number, because the mean of its divisors is an integer number (387615205).

Almost surely, 2^775230409 is an apocalyptic number.

It is an amenable number.

775230409 is a deficient number, since it is larger than the sum of its proper divisors (1).

775230409 is an equidigital number, since it uses as much as digits as its factorization.

775230409 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 52920, while the sum is 37.

The square root of 775230409 is about 27842.9597744205. The cubic root of 775230409 is about 918.6362944170.

The spelling of 775230409 in words is "seven hundred seventy-five million, two hundred thirty thousand, four hundred nine".