23144749 has 2 divisors, whose sum is σ = 23144750. Its totient is φ = 23144748.

The previous prime is 23144747. The next prime is 23144767. The reversal of 23144749 is 94744132.

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., 23136100 + 8649 = 4810^2 + 93^2 .

It is a cyclic number.

It is not a de Polignac number, because 23144749 - 2¹ = 23144747 is a prime.

Together with 23144747, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23144743) 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, 11572374 + 11572375.

It is an arithmetic number, because the mean of its divisors is an integer number (11572375).

Almost surely, 2^23144749 is an apocalyptic number.

It is an amenable number.

23144749 is a deficient number, since it is larger than the sum of its proper divisors (1).

23144749 is an equidigital number, since it uses as much as digits as its factorization.

23144749 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 24192, while the sum is 34.

The square root of 23144749 is about 4810.8989804401. The cubic root of 23144749 is about 284.9820405221.

The spelling of 23144749 in words is "twenty-three million, one hundred forty-four thousand, seven hundred forty-nine".