1144789 has 8 divisors (see below), whose sum is σ = 1189760. Its totient is φ = 1100736.

The previous prime is 1144783. The next prime is 1144823. The reversal of 1144789 is 9874411.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1144789 - 2⁵ = 1144757 is a prime.

It is a Duffinian number.

1144789 is a lucky number.

It is a plaindrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1144783) 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 7 ways as a sum of consecutive naturals, for example, 3229 + ... + 3565.

It is an arithmetic number, because the mean of its divisors is an integer number (148720).

2^1144789 is an apocalyptic number.

It is an amenable number.

1144789 is a deficient number, since it is larger than the sum of its proper divisors (44971).

1144789 is an equidigital number, since it uses as much as digits as its factorization.

1144789 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 459.

The product of its digits is 8064, while the sum is 34.

The square root of 1144789 is about 1069.9481295839. The cubic root of 1144789 is about 104.6104690181.

The spelling of 1144789 in words is "one million, one hundred forty-four thousand, seven hundred eighty-nine".