23923009 has 8 divisors (see below), whose sum is σ = 26159328. Its totient is φ = 21696960.

The previous prime is 23923001. The next prime is 23923019. The reversal of 23923009 is 90032932.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 23923009 - 2³ = 23923001 is a prime.

It is a super-2 number, since 2×23923009² = 1144620719228162, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23923001) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2809 + ... + 7465.

It is an arithmetic number, because the mean of its divisors is an integer number (3269916).

Almost surely, 2^23923009 is an apocalyptic number.

It is an amenable number.

23923009 is a deficient number, since it is larger than the sum of its proper divisors (2236319).

23923009 is a wasteful number, since it uses less digits than its factorization.

23923009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5135.

The product of its (nonzero) digits is 2916, while the sum is 28.

The square root of 23923009 is about 4891.1153124824. The cubic root of 23923009 is about 288.1411385442.

The spelling of 23923009 in words is "twenty-three million, nine hundred twenty-three thousand, nine".