1143789 has 8 divisors (see below), whose sum is σ = 1577760. Its totient is φ = 736176.

The previous prime is 1143763. The next prime is 1143799. The reversal of 1143789 is 9873411.

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

It is not a de Polignac number, because 1143789 - 2⁷ = 1143661 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1143719) 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, 6487 + ... + 6660.

It is an arithmetic number, because the mean of its divisors is an integer number (197220).

2^1143789 is an apocalyptic number.

It is an amenable number.

1143789 is a deficient number, since it is larger than the sum of its proper divisors (433971).

1143789 is a wasteful number, since it uses less digits than its factorization.

1143789 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13179.

The product of its digits is 6048, while the sum is 33.

The square root of 1143789 is about 1069.4807151136. The cubic root of 1143789 is about 104.5800002465.

The spelling of 1143789 in words is "one million, one hundred forty-three thousand, seven hundred eighty-nine".