1145847 has 4 divisors (see below), whose sum is σ = 1527800. Its totient is φ = 763896.

The previous prime is 1145843. The next prime is 1145849. The reversal of 1145847 is 7485411.

1145847 is nontrivially palindromic in base 5.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 1145847 - 2² = 1145843 is a prime.

It is a D-number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1145843) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 190972 + ... + 190977.

It is an arithmetic number, because the mean of its divisors is an integer number (381950).

2^1145847 is an apocalyptic number.

1145847 is a deficient number, since it is larger than the sum of its proper divisors (381953).

1145847 is an equidigital number, since it uses as much as digits as its factorization.

1145847 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 381952.

The product of its digits is 4480, while the sum is 30.

The square root of 1145847 is about 1070.4424318944. The cubic root of 1145847 is about 104.6426856676.

The spelling of 1145847 in words is "one million, one hundred forty-five thousand, eight hundred forty-seven".