23423409 has 12 divisors (see below), whose sum is σ = 35614800. Its totient is φ = 14793624.

The previous prime is 23423381. The next prime is 23423417. The reversal of 23423409 is 90432432.

It is a happy number.

23423409 is a `hidden beast` number, since 234 + 23 + 409 = 666.

It is not a de Polignac number, because 23423409 - 2¹⁵ = 23390641 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (23423429) 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 11 ways as a sum of consecutive naturals, for example, 68319 + ... + 68660.

It is an arithmetic number, because the mean of its divisors is an integer number (2967900).

Almost surely, 2^23423409 is an apocalyptic number.

It is an amenable number.

23423409 is a deficient number, since it is larger than the sum of its proper divisors (12191391).

23423409 is a wasteful number, since it uses less digits than its factorization.

23423409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137004 (or 137001 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 27.

The square root of 23423409 is about 4839.7736517321. The cubic root of 23423409 is about 286.1211974311.

It can be divided in two parts, 23423 and 409, that added together give a palindrome (23832).

The spelling of 23423409 in words is "twenty-three million, four hundred twenty-three thousand, four hundred nine".