1143879269 has 8 divisors (see below), whose sum is σ = 1233976800. Its totient is φ = 1054082736.

The previous prime is 1143879257. The next prime is 1143879271. The reversal of 1143879269 is 9629783411.

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-1143879269 is a prime.

It is a super-2 number, since 2×1143879269² = 2616919564095948722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1143879299) 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, 67319 + ... + 82580.

It is an arithmetic number, because the mean of its divisors is an integer number (154247100).

Almost surely, 2^1143879269 is an apocalyptic number.

It is an amenable number.

1143879269 is a deficient number, since it is larger than the sum of its proper divisors (90097531).

1143879269 is a wasteful number, since it uses less digits than its factorization.

1143879269 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 150499.

The product of its digits is 653184, while the sum is 50.

The square root of 1143879269 is about 33821.2842600632. The cubic root of 1143879269 is about 1045.8275136106.

The spelling of 1143879269 in words is "one billion, one hundred forty-three million, eight hundred seventy-nine thousand, two hundred sixty-nine".