1128959 has 4 divisors (see below), whose sum is σ = 1215816. Its totient is φ = 1042104.

The previous prime is 1128949. The next prime is 1128977. The reversal of 1128959 is 9598211.

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 1128959 - 2⁴ = 1128943 is a prime.

It is a Duffinian number.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1128949) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 43409 + ... + 43434.

It is an arithmetic number, because the mean of its divisors is an integer number (303954).

2^1128959 is an apocalyptic number.

1128959 is a deficient number, since it is larger than the sum of its proper divisors (86857).

1128959 is an equidigital number, since it uses as much as digits as its factorization.

1128959 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86856.

The product of its digits is 6480, while the sum is 35.

The square root of 1128959 is about 1062.5248232394. The cubic root of 1128959 is about 104.1260490885.

The spelling of 1128959 in words is "one million, one hundred twenty-eight thousand, nine hundred fifty-nine".