1147879 has 4 divisors (see below), whose sum is σ = 1158520. Its totient is φ = 1137240.

The previous prime is 1147843. The next prime is 1147889. The reversal of 1147879 is 9787411.

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 1147879 - 2¹¹ = 1145831 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 (1147819) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5157 + ... + 5374.

It is an arithmetic number, because the mean of its divisors is an integer number (289630).

2^1147879 is an apocalyptic number.

1147879 is a deficient number, since it is larger than the sum of its proper divisors (10641).

1147879 is a wasteful number, since it uses less digits than its factorization.

1147879 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10640.

The product of its digits is 14112, while the sum is 37.

The square root of 1147879 is about 1071.3911517275. The cubic root of 1147879 is about 104.7045055467.

The spelling of 1147879 in words is "one million, one hundred forty-seven thousand, eight hundred seventy-nine".