48809 has 2 divisors, whose sum is σ = 48810. Its totient is φ = 48808.

The previous prime is 48799. The next prime is 48817. The reversal of 48809 is 90884.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 38809 + 10000 = 197^2 + 100^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-48809 is a prime.

It is not a weakly prime, because it can be changed into another prime (48859) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24404 + 24405.

It is an arithmetic number, because the mean of its divisors is an integer number (24405).

2⁴⁸⁸⁰⁹ is an apocalyptic number.

It is an amenable number.

48809 is a deficient number, since it is larger than the sum of its proper divisors (1).

48809 is an equidigital number, since it uses as much as digits as its factorization.

48809 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2304, while the sum is 29.

The square root of 48809 is about 220.9275899475. The cubic root of 48809 is about 36.5454491075.

The spelling of 48809 in words is "forty-eight thousand, eight hundred nine".