948809 has 4 divisors (see below), whose sum is σ = 950916. Its totient is φ = 946704.

The previous prime is 948799. The next prime is 948839. The reversal of 948809 is 908849.

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

It can be written as a sum of positive squares in 2 ways, for example, as 635209 + 313600 = 797^2 + 560^2 .

It is a cyclic number.

It is not a de Polignac number, because 948809 - 2¹⁶ = 883273 is a prime.

It is a Duffinian number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 948809.

It is not an unprimeable number, because it can be changed into a prime (948839) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 74 + ... + 1379.

It is an arithmetic number, because the mean of its divisors is an integer number (237729).

2⁹⁴⁸⁸⁰⁹ is an apocalyptic number.

It is an amenable number.

948809 is a deficient number, since it is larger than the sum of its proper divisors (2107).

948809 is a wasteful number, since it uses less digits than its factorization.

948809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2106.

The product of its (nonzero) digits is 20736, while the sum is 38.

The square root of 948809 is about 974.0682727612. The cubic root of 948809 is about 98.2636590290.

The spelling of 948809 in words is "nine hundred forty-eight thousand, eight hundred nine".