1147244879 has 4 divisors (see below), whose sum is σ = 1251539880. Its totient is φ = 1042949880.

The previous prime is 1147244867. The next prime is 1147244897. The reversal of 1147244879 is 9784427411.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1147244879 - 2⁴ = 1147244863 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 (1147244279) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52147484 + ... + 52147505.

It is an arithmetic number, because the mean of its divisors is an integer number (312884970).

Almost surely, 2^1147244879 is an apocalyptic number.

1147244879 is a deficient number, since it is larger than the sum of its proper divisors (104295001).

1147244879 is a wasteful number, since it uses less digits than its factorization.

1147244879 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104295000.

The product of its digits is 451584, while the sum is 47.

The square root of 1147244879 is about 33871.0035133298. The cubic root of 1147244879 is about 1046.8522141312.

The spelling of 1147244879 in words is "one billion, one hundred forty-seven million, two hundred forty-four thousand, eight hundred seventy-nine".