1129109 has 2 divisors, whose sum is σ = 1129110. Its totient is φ = 1129108.

The previous prime is 1129103. The next prime is 1129111. The reversal of 1129109 is 9019211.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 908209 + 220900 = 953^2 + 470^2 .

It is a cyclic number.

It is not a de Polignac number, because 1129109 - 2¹² = 1125013 is a prime.

Together with 1129111, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1129103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 564554 + 564555.

It is an arithmetic number, because the mean of its divisors is an integer number (564555).

2^1129109 is an apocalyptic number.

It is an amenable number.

1129109 is a deficient number, since it is larger than the sum of its proper divisors (1).

1129109 is an equidigital number, since it uses as much as digits as its factorization.

1129109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 162, while the sum is 23.

The square root of 1129109 is about 1062.5954074811. The cubic root of 1129109 is about 104.1306604800.

The spelling of 1129109 in words is "one million, one hundred twenty-nine thousand, one hundred nine".