1158959 has 4 divisors (see below), whose sum is σ = 1162080. Its totient is φ = 1155840.

The previous prime is 1158953. The next prime is 1158961. The reversal of 1158959 is 9598511.

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 1158959 - 2¹² = 1154863 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 (1158953) 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, 914 + ... + 1775.

It is an arithmetic number, because the mean of its divisors is an integer number (290520).

2^1158959 is an apocalyptic number.

1158959 is a deficient number, since it is larger than the sum of its proper divisors (3121).

1158959 is an equidigital number, since it uses as much as digits as its factorization.

1158959 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3120.

The product of its digits is 16200, while the sum is 38.

The square root of 1158959 is about 1076.5495808369. The cubic root of 1158959 is about 105.0403170948.

The spelling of 1158959 in words is "one million, one hundred fifty-eight thousand, nine hundred fifty-nine".