23726489 has 2 divisors, whose sum is σ = 23726490. Its totient is φ = 23726488.

The previous prime is 23726471. The next prime is 23726513. The reversal of 23726489 is 98462732.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18344089 + 5382400 = 4283^2 + 2320^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23726489 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (23726419) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11863244 + 11863245.

It is an arithmetic number, because the mean of its divisors is an integer number (11863245).

Almost surely, 2^23726489 is an apocalyptic number.

It is an amenable number.

23726489 is a deficient number, since it is larger than the sum of its proper divisors (1).

23726489 is an equidigital number, since it uses as much as digits as its factorization.

23726489 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 145152, while the sum is 41.

The square root of 23726489 is about 4870.9843974293. The cubic root of 23726489 is about 287.3499718809.

The spelling of 23726489 in words is "twenty-three million, seven hundred twenty-six thousand, four hundred eighty-nine".