1128769 has 2 divisors, whose sum is σ = 1128770. Its totient is φ = 1128768.

The previous prime is 1128763. The next prime is 1128773. The reversal of 1128769 is 9678211.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 831744 + 297025 = 912^2 + 545^2 .

It is a cyclic number.

It is not a de Polignac number, because 1128769 - 2³ = 1128761 is a prime.

It is a super-2 number, since 2×1128769² = 2548238910722, which contains 22 as substring.

It is an Ulam number.

It is not a weakly prime, because it can be changed into another prime (1128761) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 564384 + 564385.

It is an arithmetic number, because the mean of its divisors is an integer number (564385).

2^1128769 is an apocalyptic number.

It is an amenable number.

1128769 is a deficient number, since it is larger than the sum of its proper divisors (1).

1128769 is an equidigital number, since it uses as much as digits as its factorization.

1128769 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6048, while the sum is 34.

The square root of 1128769 is about 1062.4354098015. The cubic root of 1128769 is about 104.1202074063.

The spelling of 1128769 in words is "one million, one hundred twenty-eight thousand, seven hundred sixty-nine".