1143447 has 8 divisors (see below), whose sum is σ = 1538544. Its totient is φ = 755328.

The previous prime is 1143433. The next prime is 1143469. The reversal of 1143447 is 7443411.

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

It is not a de Polignac number, because 1143447 - 2¹⁰ = 1142423 is a prime.

It is a Smith number, since the sum of its digits (24) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1143407) 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 7 ways as a sum of consecutive naturals, for example, 1348 + ... + 2025.

It is an arithmetic number, because the mean of its divisors is an integer number (192318).

2^1143447 is an apocalyptic number.

1143447 is a deficient number, since it is larger than the sum of its proper divisors (395097).

1143447 is a wasteful number, since it uses less digits than its factorization.

1143447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3489.

The product of its digits is 1344, while the sum is 24.

The square root of 1143447 is about 1069.3208124786. The cubic root of 1143447 is about 104.5695758514.

Adding to 1143447 its reverse (7443411), we get a palindrome (8586858).

The spelling of 1143447 in words is "one million, one hundred forty-three thousand, four hundred forty-seven".