232740809 has 4 divisors (see below), whose sum is σ = 265989504. Its totient is φ = 199492116.

The previous prime is 232740799. The next prime is 232740821. The reversal of 232740809 is 908047232.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 232740809 - 2⁴ = 232740793 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (232740869) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16624337 + ... + 16624350.

It is an arithmetic number, because the mean of its divisors is an integer number (66497376).

Almost surely, 2^232740809 is an apocalyptic number.

It is an amenable number.

232740809 is a deficient number, since it is larger than the sum of its proper divisors (33248695).

232740809 is an equidigital number, since it uses as much as digits as its factorization.

232740809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33248694.

The product of its (nonzero) digits is 24192, while the sum is 35.

The square root of 232740809 is about 15255.8450765600. The cubic root of 232740809 is about 615.1166932157.

The spelling of 232740809 in words is "two hundred thirty-two million, seven hundred forty thousand, eight hundred nine".