1143459839 has 8 divisors (see below), whose sum is σ = 1151026752. Its totient is φ = 1135918080.

The previous prime is 1143459829. The next prime is 1143459841. The reversal of 1143459839 is 9389543411.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1143459839 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1143459793 and 1143459802.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1143459829) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 89687 + ... + 101639.

It is an arithmetic number, because the mean of its divisors is an integer number (143878344).

Almost surely, 2^1143459839 is an apocalyptic number.

1143459839 is a deficient number, since it is larger than the sum of its proper divisors (7566913).

1143459839 is a wasteful number, since it uses less digits than its factorization.

1143459839 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12577.

The product of its digits is 466560, while the sum is 47.

The square root of 1143459839 is about 33815.0830103964. The cubic root of 1143459839 is about 1045.6996723046.

The spelling of 1143459839 in words is "one billion, one hundred forty-three million, four hundred fifty-nine thousand, eight hundred thirty-nine".