1140847 has 2 divisors, whose sum is σ = 1140848. Its totient is φ = 1140846.

The previous prime is 1140803. The next prime is 1140851. The reversal of 1140847 is 7480411.

It is a strong prime.

It is an emirp because it is prime and its reverse (7480411) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1140847 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1150847) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 570423 + 570424.

It is an arithmetic number, because the mean of its divisors is an integer number (570424).

2^1140847 is an apocalyptic number.

1140847 is a deficient number, since it is larger than the sum of its proper divisors (1).

1140847 is an equidigital number, since it uses as much as digits as its factorization.

1140847 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 896, while the sum is 25.

The square root of 1140847 is about 1068.1043956468. The cubic root of 1140847 is about 104.4902580145.

The spelling of 1140847 in words is "one million, one hundred forty thousand, eight hundred forty-seven".