23384909 has 4 divisors (see below), whose sum is σ = 23397660. Its totient is φ = 23372160.

The previous prime is 23384903. The next prime is 23384923. The reversal of 23384909 is 90948332.

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 17455684 + 5929225 = 4178^2 + 2435^2 .

It is a cyclic number.

It is not a de Polignac number, because 23384909 - 2⁸ = 23384653 is a prime.

It is a Duffinian number.

It is a plaindrome in base 11.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23384903) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3044 + ... + 7485.

It is an arithmetic number, because the mean of its divisors is an integer number (5849415).

Almost surely, 2^23384909 is an apocalyptic number.

It is an amenable number.

23384909 is a deficient number, since it is larger than the sum of its proper divisors (12751).

23384909 is a wasteful number, since it uses less digits than its factorization.

23384909 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12750.

The product of its (nonzero) digits is 46656, while the sum is 38.

The square root of 23384909 is about 4835.7945572574. The cubic root of 23384909 is about 285.9643499665.

The spelling of 23384909 in words is "twenty-three million, three hundred eighty-four thousand, nine hundred nine".