23985404449 has 2 divisors, whose sum is σ = 23985404450. Its totient is φ = 23985404448.

The previous prime is 23985404447. The next prime is 23985404473. The reversal of 23985404449 is 94440458932.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 23155100224 + 830304225 = 152168^2 + 28815^2 .

It is a cyclic number.

It is not a de Polignac number, because 23985404449 - 2¹ = 23985404447 is a prime.

Together with 23985404447, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 23985404396 and 23985404405.

It is not a weakly prime, because it can be changed into another prime (23985404447) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11992702224 + 11992702225.

It is an arithmetic number, because the mean of its divisors is an integer number (11992702225).

Almost surely, 2^23985404449 is an apocalyptic number.

It is an amenable number.

23985404449 is a deficient number, since it is larger than the sum of its proper divisors (1).

23985404449 is an equidigital number, since it uses as much as digits as its factorization.

23985404449 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4976640, while the sum is 52.

The spelling of 23985404449 in words is "twenty-three billion, nine hundred eighty-five million, four hundred four thousand, four hundred forty-nine".