23856841 has 2 divisors, whose sum is σ = 23856842. Its totient is φ = 23856840.

The previous prime is 23856839. The next prime is 23856853. The reversal of 23856841 is 14865832.

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., 22127616 + 1729225 = 4704^2 + 1315^2 .

It is a cyclic number.

It is not a de Polignac number, because 23856841 - 2¹ = 23856839 is a prime.

Together with 23856839, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 23856841.

It is not a weakly prime, because it can be changed into another prime (23856881) 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, 11928420 + 11928421.

It is an arithmetic number, because the mean of its divisors is an integer number (11928421).

Almost surely, 2^23856841 is an apocalyptic number.

It is an amenable number.

23856841 is a deficient number, since it is larger than the sum of its proper divisors (1).

23856841 is an equidigital number, since it uses as much as digits as its factorization.

23856841 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 46080, while the sum is 37.

The square root of 23856841 is about 4884.3465274282. The cubic root of 23856841 is about 287.8752393325.

The spelling of 23856841 in words is "twenty-three million, eight hundred fifty-six thousand, eight hundred forty-one".