24444989 has 2 divisors, whose sum is σ = 24444990. Its totient is φ = 24444988.

The previous prime is 24444977. The next prime is 24444991. The reversal of 24444989 is 98944442.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18344089 + 6100900 = 4283^2 + 2470^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-24444989 is a prime.

It is a Sophie Germain prime.

Together with 24444991, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (24444689) 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, 12222494 + 12222495.

It is an arithmetic number, because the mean of its divisors is an integer number (12222495).

Almost surely, 2^24444989 is an apocalyptic number.

It is an amenable number.

24444989 is a deficient number, since it is larger than the sum of its proper divisors (1).

24444989 is an equidigital number, since it uses as much as digits as its factorization.

24444989 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 331776, while the sum is 44.

The square root of 24444989 is about 4944.1873953158. The cubic root of 24444989 is about 290.2217447901.

The spelling of 24444989 in words is "twenty-four million, four hundred forty-four thousand, nine hundred eighty-nine".