23853993 has 4 divisors (see below), whose sum is σ = 31805328. Its totient is φ = 15902660.

The previous prime is 23853959. The next prime is 23854027. The reversal of 23853993 is 39935832.

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 an interprime number because it is at equal distance from previous prime (23853959) and next prime (23854027).

It is a cyclic number.

It is not a de Polignac number, because 23853993 - 2²⁰ = 22805417 is a prime.

It is not an unprimeable number, because it can be changed into a prime (23853913) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3975663 + ... + 3975668.

It is an arithmetic number, because the mean of its divisors is an integer number (7951332).

Almost surely, 2^23853993 is an apocalyptic number.

It is an amenable number.

23853993 is a deficient number, since it is larger than the sum of its proper divisors (7951335).

23853993 is an equidigital number, since it uses as much as digits as its factorization.

23853993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7951334.

The product of its digits is 174960, while the sum is 42.

The square root of 23853993 is about 4884.0549751206. The cubic root of 23853993 is about 287.8637834807.

The spelling of 23853993 in words is "twenty-three million, eight hundred fifty-three thousand, nine hundred ninety-three".