1158839 has 8 divisors (see below), whose sum is σ = 1338768. Its totient is φ = 991360.

The previous prime is 1158827. The next prime is 1158841. The reversal of 1158839 is 9388511.

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 1158839 - 2⁴ = 1158823 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1158799 and 1158808.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1158139) 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 7 ways as a sum of consecutive naturals, for example, 2912 + ... + 3285.

It is an arithmetic number, because the mean of its divisors is an integer number (167346).

2^1158839 is an apocalyptic number.

1158839 is a deficient number, since it is larger than the sum of its proper divisors (179929).

1158839 is a wasteful number, since it uses less digits than its factorization.

1158839 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6225.

The product of its digits is 8640, while the sum is 35.

The square root of 1158839 is about 1076.4938457790. The cubic root of 1158839 is about 105.0366916364.

The spelling of 1158839 in words is "one million, one hundred fifty-eight thousand, eight hundred thirty-nine".