23824409 has 4 divisors (see below), whose sum is σ = 27227904. Its totient is φ = 20420916.

The previous prime is 23824391. The next prime is 23824417. The reversal of 23824409 is 90442832.

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 23824409 - 2⁸ = 23824153 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23824459) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1701737 + ... + 1701750.

It is an arithmetic number, because the mean of its divisors is an integer number (6806976).

Almost surely, 2^23824409 is an apocalyptic number.

It is an amenable number.

23824409 is a deficient number, since it is larger than the sum of its proper divisors (3403495).

23824409 is an equidigital number, since it uses as much as digits as its factorization.

23824409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3403494.

The product of its (nonzero) digits is 13824, while the sum is 32.

The square root of 23824409 is about 4881.0254045641. The cubic root of 23824409 is about 287.7447302441.

The spelling of 23824409 in words is "twenty-three million, eight hundred twenty-four thousand, four hundred nine".