23985789 has 4 divisors (see below), whose sum is σ = 31981056. Its totient is φ = 15990524.

The previous prime is 23985781. The next prime is 23985791. The reversal of 23985789 is 98758932.

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 a cyclic number.

It is not a de Polignac number, because 23985789 - 2³ = 23985781 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23985781) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3997629 + ... + 3997634.

It is an arithmetic number, because the mean of its divisors is an integer number (7995264).

Almost surely, 2^23985789 is an apocalyptic number.

It is an amenable number.

23985789 is a deficient number, since it is larger than the sum of its proper divisors (7995267).

23985789 is an equidigital number, since it uses as much as digits as its factorization.

23985789 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7995266.

The product of its digits is 1088640, while the sum is 51.

The square root of 23985789 is about 4897.5288666837. The cubic root of 23985789 is about 288.3929700189.

The spelling of 23985789 in words is "twenty-three million, nine hundred eighty-five thousand, seven hundred eighty-nine".