1129847 has 2 divisors, whose sum is σ = 1129848. Its totient is φ = 1129846.

The previous prime is 1129841. The next prime is 1129853. The reversal of 1129847 is 7489211.

It is a balanced prime because it is at equal distance from previous prime (1129841) and next prime (1129853).

It is a cyclic number.

It is not a de Polignac number, because 1129847 - 2⁴ = 1129831 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1129841) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 564923 + 564924.

It is an arithmetic number, because the mean of its divisors is an integer number (564924).

2^1129847 is an apocalyptic number.

1129847 is a deficient number, since it is larger than the sum of its proper divisors (1).

1129847 is an equidigital number, since it uses as much as digits as its factorization.

1129847 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4032, while the sum is 32.

The square root of 1129847 is about 1062.9426136909. The cubic root of 1129847 is about 104.1533425802.

The spelling of 1129847 in words is "one million, one hundred twenty-nine thousand, eight hundred forty-seven".