234995809 has 2 divisors, whose sum is σ = 234995810. Its totient is φ = 234995808.

The previous prime is 234995773. The next prime is 234995821. The reversal of 234995809 is 908599432.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 229613409 + 5382400 = 15153^2 + 2320^2 .

It is a cyclic number.

It is not a de Polignac number, because 234995809 - 2¹¹ = 234993761 is a prime.

It is not a weakly prime, because it can be changed into another prime (234995009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 117497904 + 117497905.

It is an arithmetic number, because the mean of its divisors is an integer number (117497905).

Almost surely, 2^234995809 is an apocalyptic number.

It is an amenable number.

234995809 is a deficient number, since it is larger than the sum of its proper divisors (1).

234995809 is an equidigital number, since it uses as much as digits as its factorization.

234995809 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 699840, while the sum is 49.

The square root of 234995809 is about 15329.5730207987. The cubic root of 234995809 is about 617.0969107899.

The spelling of 234995809 in words is "two hundred thirty-four million, nine hundred ninety-five thousand, eight hundred nine".