1148809 has 4 divisors (see below), whose sum is σ = 1216404. Its totient is φ = 1081216.

The previous prime is 1148773. The next prime is 1148837. The reversal of 1148809 is 9088411.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9088411 = 103 ⋅88237.

It can be written as a sum of positive squares in 2 ways, for example, as 697225 + 451584 = 835^2 + 672^2 .

It is a cyclic number.

It is not a de Polignac number, because 1148809 - 2⁷ = 1148681 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1148839) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33772 + ... + 33805.

It is an arithmetic number, because the mean of its divisors is an integer number (304101).

2^1148809 is an apocalyptic number.

It is an amenable number.

1148809 is a deficient number, since it is larger than the sum of its proper divisors (67595).

1148809 is an equidigital number, since it uses as much as digits as its factorization.

1148809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67594.

The product of its (nonzero) digits is 2304, while the sum is 31.

The square root of 1148809 is about 1071.8250790124. The cubic root of 1148809 is about 104.7327747587.

The spelling of 1148809 in words is "one million, one hundred forty-eight thousand, eight hundred nine".