1143439984 has 10 divisors (see below), whose sum is σ = 2215415000. Its totient is φ = 571719984.

The previous prime is 1143439981. The next prime is 1143440003. The reversal of 1143439984 is 4899343411.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1143439981) 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 as a sum of consecutive naturals, namely, 35732484 + ... + 35732515.

It is an arithmetic number, because the mean of its divisors is an integer number (221541500).

Almost surely, 2^1143439984 is an apocalyptic number.

It is an amenable number.

1143439984 is a deficient number, since it is larger than the sum of its proper divisors (1071975016).

1143439984 is an equidigital number, since it uses as much as digits as its factorization.

1143439984 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71465007 (or 71465001 counting only the distinct ones).

The product of its digits is 373248, while the sum is 46.

The square root of 1143439984 is about 33814.7894271131. The cubic root of 1143439984 is about 1045.6936197711.

The spelling of 1143439984 in words is "one billion, one hundred forty-three million, four hundred thirty-nine thousand, nine hundred eighty-four".