23642849 has 2 divisors, whose sum is σ = 23642850. Its totient is φ = 23642848.

The previous prime is 23642837. The next prime is 23642851. The reversal of 23642849 is 94824632.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 23571025 + 71824 = 4855^2 + 268^2 .

It is a cyclic number.

It is not a de Polignac number, because 23642849 - 2¹² = 23638753 is a prime.

Together with 23642851, 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 (23642249) 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, 11821424 + 11821425.

It is an arithmetic number, because the mean of its divisors is an integer number (11821425).

Almost surely, 2^23642849 is an apocalyptic number.

It is an amenable number.

23642849 is a deficient number, since it is larger than the sum of its proper divisors (1).

23642849 is an equidigital number, since it uses as much as digits as its factorization.

23642849 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 82944, while the sum is 38.

The square root of 23642849 is about 4862.3912841317. The cubic root of 23642849 is about 287.0119214657.

The spelling of 23642849 in words is "twenty-three million, six hundred forty-two thousand, eight hundred forty-nine".