23968889 has 6 divisors (see below), whose sum is σ = 27882234. Its totient is φ = 20544720.

The previous prime is 23968873. The next prime is 23968897. The reversal of 23968889 is 98886932.

It can be written as a sum of positive squares in only one way, i.e., 15366400 + 8602489 = 3920^2 + 2933^2 .

It is not a de Polignac number, because 23968889 - 2⁴ = 23968873 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 23968889.

It is not an unprimeable number, because it can be changed into a prime (23968849) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 244532 + ... + 244629.

It is an arithmetic number, because the mean of its divisors is an integer number (4647039).

Almost surely, 2^23968889 is an apocalyptic number.

It is an amenable number.

23968889 is a deficient number, since it is larger than the sum of its proper divisors (3913345).

23968889 is an equidigital number, since it uses as much as digits as its factorization.

23968889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 489175 (or 489168 counting only the distinct ones).

The product of its digits is 1492992, while the sum is 53.

The square root of 23968889 is about 4895.8032027442. The cubic root of 23968889 is about 288.3252217601.

The spelling of 23968889 in words is "twenty-three million, nine hundred sixty-eight thousand, eight hundred eighty-nine".