48312809 has 2 divisors, whose sum is σ = 48312810. Its totient is φ = 48312808.

The previous prime is 48312791. The next prime is 48312821. The reversal of 48312809 is 90821384.

It is a happy number.

48312809 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 47886400 + 426409 = 6920^2 + 653^2 .

It is a cyclic number.

It is not a de Polignac number, because 48312809 - 2⁸ = 48312553 is a prime.

It is not a weakly prime, because it can be changed into another prime (48312899) 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 as a sum of consecutive naturals, namely, 24156404 + 24156405.

It is an arithmetic number, because the mean of its divisors is an integer number (24156405).

Almost surely, 2^48312809 is an apocalyptic number.

It is an amenable number.

48312809 is a deficient number, since it is larger than the sum of its proper divisors (1).

48312809 is an equidigital number, since it uses as much as digits as its factorization.

48312809 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13824, while the sum is 35.

The square root of 48312809 is about 6950.7416151084. The cubic root of 48312809 is about 364.2118704756.

The spelling of 48312809 in words is "forty-eight million, three hundred twelve thousand, eight hundred nine".