1147147 has 8 divisors (see below), whose sum is σ = 1181952. Its totient is φ = 1113000.

The previous prime is 1147141. The next prime is 1147169. The reversal of 1147147 is 7417411.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1147147 - 2¹¹ = 1145099 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1147141) 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 7 ways as a sum of consecutive naturals, for example, 7522 + ... + 7672.

It is an arithmetic number, because the mean of its divisors is an integer number (147744).

2^1147147 is an apocalyptic number.

1147147 is the 573-rd centered heptagonal number.

1147147 is a deficient number, since it is larger than the sum of its proper divisors (34805).

1147147 is a wasteful number, since it uses less digits than its factorization.

1147147 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 329.

The product of its digits is 784, while the sum is 25.

The square root of 1147147 is about 1071.0494853180. The cubic root of 1147147 is about 104.6822442004.

The spelling of 1147147 in words is "one million, one hundred forty-seven thousand, one hundred forty-seven".