1143671479 has 8 divisors (see below), whose sum is σ = 1168255008. Its totient is φ = 1119323520.

The previous prime is 1143671467. The next prime is 1143671497. The reversal of 1143671479 is 9741763411.

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

It is not a de Polignac number, because 1143671479 - 2¹⁷ = 1143540407 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1143771479) 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, 49062 + ... + 68515.

It is an arithmetic number, because the mean of its divisors is an integer number (146031876).

Almost surely, 2^1143671479 is an apocalyptic number.

1143671479 is a deficient number, since it is larger than the sum of its proper divisors (24583529).

1143671479 is a wasteful number, since it uses less digits than its factorization.

1143671479 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117785.

The product of its digits is 127008, while the sum is 43.

The square root of 1143671479 is about 33818.2122383783. The cubic root of 1143671479 is about 1045.7641835999.

The spelling of 1143671479 in words is "one billion, one hundred forty-three million, six hundred seventy-one thousand, four hundred seventy-nine".