23849855 has 4 divisors (see below), whose sum is σ = 28619832. Its totient is φ = 19079880.

The previous prime is 23849849. The next prime is 23849879. The reversal of 23849855 is 55894832.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 23849855 - 2⁸ = 23849599 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2384981 + ... + 2384990.

It is an arithmetic number, because the mean of its divisors is an integer number (7154958).

Almost surely, 2^23849855 is an apocalyptic number.

23849855 is a deficient number, since it is larger than the sum of its proper divisors (4769977).

23849855 is an equidigital number, since it uses as much as digits as its factorization.

23849855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4769976.

The product of its digits is 345600, while the sum is 44.

The square root of 23849855 is about 4883.6313333420. The cubic root of 23849855 is about 287.8471370821.

The spelling of 23849855 in words is "twenty-three million, eight hundred forty-nine thousand, eight hundred fifty-five".