23819449 has 2 divisors, whose sum is σ = 23819450. Its totient is φ = 23819448.

The previous prime is 23819447. The next prime is 23819491. The reversal of 23819449 is 94491832.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 23765625 + 53824 = 4875^2 + 232^2 .

It is a cyclic number.

It is not a de Polignac number, because 23819449 - 2¹ = 23819447 is a prime.

Together with 23819447, 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 (23819441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11909724 + 11909725.

It is an arithmetic number, because the mean of its divisors is an integer number (11909725).

Almost surely, 2^23819449 is an apocalyptic number.

It is an amenable number.

23819449 is a deficient number, since it is larger than the sum of its proper divisors (1).

23819449 is an equidigital number, since it uses as much as digits as its factorization.

23819449 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 62208, while the sum is 40.

The square root of 23819449 is about 4880.5172881571. The cubic root of 23819449 is about 287.7247603480.

The spelling of 23819449 in words is "twenty-three million, eight hundred nineteen thousand, four hundred forty-nine".