1129439 has 2 divisors, whose sum is σ = 1129440. Its totient is φ = 1129438.

The previous prime is 1129433. The next prime is 1129441. The reversal of 1129439 is 9349211.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (9349211) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1129439 - 2¹² = 1125343 is a prime.

Together with 1129441, it forms a pair of twin primes.

It is a Chen prime.

It is an Ulam number.

It is a d-powerful number, because it can be written as 1 + 1 + 2¹¹ + 9² + 4¹⁰ + 3⁹ + 9⁵ .

It is a plaindrome in base 16.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1129433) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 564719 + 564720.

It is an arithmetic number, because the mean of its divisors is an integer number (564720).

2^1129439 is an apocalyptic number.

1129439 is a deficient number, since it is larger than the sum of its proper divisors (1).

1129439 is an equidigital number, since it uses as much as digits as its factorization.

1129439 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1944, while the sum is 29.

The square root of 1129439 is about 1062.7506763112. The cubic root of 1129439 is about 104.1408041038.

The spelling of 1129439 in words is "one million, one hundred twenty-nine thousand, four hundred thirty-nine".