1128969 has 6 divisors (see below), whose sum is σ = 1630746. Its totient is φ = 752640.

The previous prime is 1128949. The next prime is 1128977. The reversal of 1128969 is 9698211.

It can be written as a sum of positive squares in only one way, i.e., 783225 + 345744 = 885^2 + 588^2 .

It is not a de Polignac number, because 1128969 - 2⁵ = 1128937 is a prime.

It is a super-2 number, since 2×1128969² = 2549142005922, which contains 22 as substring.

It is a Curzon 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 5 ways as a sum of consecutive naturals, for example, 62712 + ... + 62729.

It is an arithmetic number, because the mean of its divisors is an integer number (271791).

2^1128969 is an apocalyptic number.

It is an amenable number.

1128969 is a deficient number, since it is larger than the sum of its proper divisors (501777).

1128969 is a wasteful number, since it uses less digits than its factorization.

1128969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125447 (or 125444 counting only the distinct ones).

The product of its digits is 7776, while the sum is 36.

The square root of 1128969 is about 1062.5295290014. The cubic root of 1128969 is about 104.1263565273.

It can be divided in two parts, 112896 and 9, that multiplied together give a square (1016064 = 1008²).

The spelling of 1128969 in words is "one million, one hundred twenty-eight thousand, nine hundred sixty-nine".