1143704440 has 32 divisors (see below), whose sum is σ = 2685221280. Its totient is φ = 437590912.

The previous prime is 1143704431. The next prime is 1143704473. The reversal of 1143704440 is 444073411.

It is a junction number, because it is equal to n+sod(n) for n = 1143704399 and 1143704408.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 620659 + ... + 622498.

It is an arithmetic number, because the mean of its divisors is an integer number (83913165).

Almost surely, 2^1143704440 is an apocalyptic number.

1143704440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1143704440 is an abundant number, since it is smaller than the sum of its proper divisors (1541516840).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1143704440 is a wasteful number, since it uses less digits than its factorization.

1143704440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1243191 (or 1243187 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 28.

The square root of 1143704440 is about 33818.6995610417. The cubic root of 1143704440 is about 1045.7742299296.

Adding to 1143704440 its reverse (444073411), we get a palindrome (1587777851).

The spelling of 1143704440 in words is "one billion, one hundred forty-three million, seven hundred four thousand, four hundred forty".