234929209 has 6 divisors (see below), whose sum is σ = 238982090. Its totient is φ = 230943936.

The previous prime is 234929197. The next prime is 234929213. The reversal of 234929209 is 902929432.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 128323584 + 106605625 = 11328^2 + 10325^2 .

It is not a de Polignac number, because 234929209 - 2⁹ = 234928697 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (234929249) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 30264 + ... + 37225.

Almost surely, 2^234929209 is an apocalyptic number.

It is an amenable number.

234929209 is a deficient number, since it is larger than the sum of its proper divisors (4052881).

234929209 is an frugal number, since it uses more digits than its factorization.

234929209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67607 (or 67548 counting only the distinct ones).

The product of its (nonzero) digits is 69984, while the sum is 40.

The square root of 234929209 is about 15327.4005950128. The cubic root of 234929209 is about 617.0386082785.

The spelling of 234929209 in words is "two hundred thirty-four million, nine hundred twenty-nine thousand, two hundred nine".