232440209 has 4 divisors (see below), whose sum is σ = 234497316. Its totient is φ = 230383104.

The previous prime is 232440163. The next prime is 232440217. The reversal of 232440209 is 902044232.

232440209 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 87478609 + 144961600 = 9353^2 + 12040^2 .

It is a cyclic number.

It is not a de Polignac number, because 232440209 - 2¹⁶ = 232374673 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (232445209) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1028384 + ... + 1028609.

It is an arithmetic number, because the mean of its divisors is an integer number (58624329).

Almost surely, 2^232440209 is an apocalyptic number.

It is an amenable number.

232440209 is a deficient number, since it is larger than the sum of its proper divisors (2057107).

232440209 is a wasteful number, since it uses less digits than its factorization.

232440209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2057106.

The product of its (nonzero) digits is 3456, while the sum is 26.

The square root of 232440209 is about 15245.9899317821. The cubic root of 232440209 is about 614.8517579554.

The spelling of 232440209 in words is "two hundred thirty-two million, four hundred forty thousand, two hundred nine".