23858009 has 4 divisors (see below), whose sum is σ = 27266304. Its totient is φ = 20449716.

The previous prime is 23857997. The next prime is 23858033. The reversal of 23858009 is 90085832.

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 not a de Polignac number, because 23858009 - 2⁸ = 23857753 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 23858009.

It is not an unprimeable number, because it can be changed into a prime (23858069) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1704137 + ... + 1704150.

It is an arithmetic number, because the mean of its divisors is an integer number (6816576).

Almost surely, 2^23858009 is an apocalyptic number.

It is an amenable number.

23858009 is a deficient number, since it is larger than the sum of its proper divisors (3408295).

23858009 is an equidigital number, since it uses as much as digits as its factorization.

23858009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3408294.

The product of its (nonzero) digits is 17280, while the sum is 35.

The square root of 23858009 is about 4884.4660916010. The cubic root of 23858009 is about 287.8799372553.

The spelling of 23858009 in words is "twenty-three million, eight hundred fifty-eight thousand, nine".