234009 has 16 divisors (see below), whose sum is σ = 354240. Its totient is φ = 154548.
The previous prime is 234007. The next prime is 234029. The reversal of 234009 is 900432.
It is not a de Polignac number, because 234009 - 21 = 234007 is a prime.
It is a Curzon number.
It is a junction number, because it is equal to n+sod(n) for n = 233982 and 234000.
It is not an unprimeable number, because it can be changed into a prime (234007) by changing a digit.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2134 + ... + 2240.
It is an arithmetic number, because the mean of its divisors is an integer number (22140).
2234009 is an apocalyptic number.
It is an amenable number.
234009 is a deficient number, since it is larger than the sum of its proper divisors (120231).
234009 is an frugal number, since it uses more digits than its factorization.
234009 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 128 (or 110 counting only the distinct ones).
The product of its (nonzero) digits is 216, while the sum is 18.
The square root of 234009 is about 483.7447674136. The cubic root of 234009 is about 61.6231914982.
It can be divided in two parts, 23400 and 9, that added together give a square (23409 = 1532).
The spelling of 234009 in words is "two hundred thirty-four thousand, nine".
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