23913689 has 2 divisors, whose sum is σ = 23913690. Its totient is φ = 23913688.

The previous prime is 23913683. The next prime is 23913691. The reversal of 23913689 is 98631932.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18344089 + 5569600 = 4283^2 + 2360^2 .

It is a cyclic number.

It is not a de Polignac number, because 23913689 - 2²⁴ = 7136473 is a prime.

Together with 23913691, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (23913683) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11956844 + 11956845.

It is an arithmetic number, because the mean of its divisors is an integer number (11956845).

Almost surely, 2^23913689 is an apocalyptic number.

It is an amenable number.

23913689 is a deficient number, since it is larger than the sum of its proper divisors (1).

23913689 is an equidigital number, since it uses as much as digits as its factorization.

23913689 is an evil number, because the sum of its binary digits is even.

The product of its digits is 69984, while the sum is 41.

The square root of 23913689 is about 4890.1624717385. The cubic root of 23913689 is about 288.1037153780.

The spelling of 23913689 in words is "twenty-three million, nine hundred thirteen thousand, six hundred eighty-nine".