23649853 has 2 divisors, whose sum is σ = 23649854. Its totient is φ = 23649852.

The previous prime is 23649841. The next prime is 23649917. The reversal of 23649853 is 35894632.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 22297284 + 1352569 = 4722^2 + 1163^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23649853 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23649953) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11824926 + 11824927.

It is an arithmetic number, because the mean of its divisors is an integer number (11824927).

Almost surely, 2^23649853 is an apocalyptic number.

It is an amenable number.

23649853 is a deficient number, since it is larger than the sum of its proper divisors (1).

23649853 is an equidigital number, since it uses as much as digits as its factorization.

23649853 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 155520, while the sum is 40.

The square root of 23649853 is about 4863.1114525579. Note that the first 3 decimals coincide. The cubic root of 23649853 is about 287.0402603097.

The spelling of 23649853 in words is "twenty-three million, six hundred forty-nine thousand, eight hundred fifty-three".