1143699679 has 8 divisors (see below), whose sum is σ = 1195084800. Its totient is φ = 1092452856.

The previous prime is 1143699671. The next prime is 1143699703. The reversal of 1143699679 is 9769963411.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 1143699679 - 2³ = 1143699671 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 (1143699671) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17479 + ... + 50920.

It is an arithmetic number, because the mean of its divisors is an integer number (149385600).

Almost surely, 2^1143699679 is an apocalyptic number.

1143699679 is a deficient number, since it is larger than the sum of its proper divisors (51385121).

1143699679 is an equidigital number, since it uses as much as digits as its factorization.

1143699679 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69149.

The product of its digits is 2204496, while the sum is 55.

The square root of 1143699679 is about 33818.6291709170. The cubic root of 1143699679 is about 1045.7727788152.

The spelling of 1143699679 in words is "one billion, one hundred forty-three million, six hundred ninety-nine thousand, six hundred seventy-nine".