1144809 has 12 divisors (see below), whose sum is σ = 1667952. Its totient is φ = 756600.

The previous prime is 1144783. The next prime is 1144823. The reversal of 1144809 is 9084411.

It is not a de Polignac number, because 1144809 - 2⁷ = 1144681 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1144879) 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 11 ways as a sum of consecutive naturals, for example, 694 + ... + 1664.

It is an arithmetic number, because the mean of its divisors is an integer number (138996).

2^1144809 is an apocalyptic number.

It is an amenable number.

1144809 is a deficient number, since it is larger than the sum of its proper divisors (523143).

1144809 is a wasteful number, since it uses less digits than its factorization.

1144809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1108 (or 1105 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 27.

The square root of 1144809 is about 1069.9574757905. The cubic root of 1144809 is about 104.6110782125.

It can be divided in two parts, 1144 and 809, that added together give a triangular number (1953 = T₆₂).

The spelling of 1144809 in words is "one million, one hundred forty-four thousand, eight hundred nine".