1143406443 has 4 divisors (see below), whose sum is σ = 1524541928. Its totient is φ = 762270960.

The previous prime is 1143406379. The next prime is 1143406447. The reversal of 1143406443 is 3446043411.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 1143406443 - 2⁶ = 1143406379 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1143406443.

It is not an unprimeable number, because it can be changed into a prime (1143406447) 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, 190567738 + ... + 190567743.

It is an arithmetic number, because the mean of its divisors is an integer number (381135482).

Almost surely, 2^1143406443 is an apocalyptic number.

1143406443 is a deficient number, since it is larger than the sum of its proper divisors (381135485).

1143406443 is an equidigital number, since it uses as much as digits as its factorization.

1143406443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 381135484.

The product of its (nonzero) digits is 13824, while the sum is 30.

The square root of 1143406443 is about 33814.2934718441. The cubic root of 1143406443 is about 1045.6833950827.

Adding to 1143406443 its reverse (3446043411), we get a palindrome (4589449854).

The spelling of 1143406443 in words is "one billion, one hundred forty-three million, four hundred six thousand, four hundred forty-three".