48405809 has 4 divisors (see below), whose sum is σ = 48419904. Its totient is φ = 48391716.

The previous prime is 48405803. The next prime is 48405821. The reversal of 48405809 is 90850484.

48405809 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 48405809 - 2⁴ = 48405793 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (48405803) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1844 + ... + 10010.

It is an arithmetic number, because the mean of its divisors is an integer number (12104976).

Almost surely, 2^48405809 is an apocalyptic number.

It is an amenable number.

48405809 is a deficient number, since it is larger than the sum of its proper divisors (14095).

48405809 is an equidigital number, since it uses as much as digits as its factorization.

48405809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14094.

The product of its (nonzero) digits is 46080, while the sum is 38.

The square root of 48405809 is about 6957.4283323653. The cubic root of 48405809 is about 364.4454178793.

The spelling of 48405809 in words is "forty-eight million, four hundred five thousand, eight hundred nine".