1128849 has 4 divisors (see below), whose sum is σ = 1505136. Its totient is φ = 752564.

The previous prime is 1128823. The next prime is 1128889. The reversal of 1128849 is 9488211.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1128849 - 2²⁰ = 80273 is a prime.

It is a D-number.

It is not an unprimeable number, because it can be changed into a prime (1128889) 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, 188139 + ... + 188144.

It is an arithmetic number, because the mean of its divisors is an integer number (376284).

2^1128849 is an apocalyptic number.

It is an amenable number.

1128849 is a deficient number, since it is larger than the sum of its proper divisors (376287).

1128849 is an equidigital number, since it uses as much as digits as its factorization.

1128849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 376286.

The product of its digits is 4608, while the sum is 33.

The square root of 1128849 is about 1062.4730584820. The cubic root of 1128849 is about 104.1226671419.

The spelling of 1128849 in words is "one million, one hundred twenty-eight thousand, eight hundred forty-nine".