1147 has 4 divisors (see below), whose sum is σ = 1216. Its totient is φ = 1080.

The previous prime is 1129. The next prime is 1151. The reversal of 1147 is 7411.

Adding to 1147 its reverse (7411), we get a palindrome (8558).

It can be divided in two parts, 114 and 7, that added together give a palindrome (121).

1147 is nontrivially palindromic in base 12.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 1147 - 2^{7} = 1019 is a prime.

It is a Duffinian number.

1147 is an undulating number in base 6 and base 12.

1147 is a lucky number.

It is a plaindrome in base 10, base 14 and base 16.

It is a nialpdrome in base 11.

It is not an unprimeable number, because it can be changed into a prime (1117) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13 + ... + 49.

It is an arithmetic number, because the mean of its divisors is an integer number (304).

1147 is a deficient number, since it is larger than the sum of its proper divisors (69).

1147 is an equidigital number, since it uses as much as digits as its factorization.

1147 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68.

The product of its digits is 28, while the sum is 13.

The square root of 1147 is about 33.8673884438. The cubic root of 1147 is about 10.4677772542.

The spelling of 1147 in words is "one thousand, one hundred forty-seven", and thus it is an iban number.

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