1147863 has 4 divisors (see below), whose sum is σ = 1530488. Its totient is φ = 765240.

The previous prime is 1147843. The next prime is 1147889. The reversal of 1147863 is 3687411.

It is a happy number.

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

It is not a de Polignac number, because 1147863 - 2⁹ = 1147351 is a prime.

It is a D-number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1147863.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1147843) 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 in 3 ways as a sum of consecutive naturals, for example, 191308 + ... + 191313.

It is an arithmetic number, because the mean of its divisors is an integer number (382622).

2^1147863 is an apocalyptic number.

1147863 is a deficient number, since it is larger than the sum of its proper divisors (382625).

1147863 is an equidigital number, since it uses as much as digits as its factorization.

1147863 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 382624.

The product of its digits is 4032, while the sum is 30.

The square root of 1147863 is about 1071.3836847740. The cubic root of 1147863 is about 104.7040190610.

It can be divided in two parts, 11 and 47863, that added together give a palindrome (47874).

The spelling of 1147863 in words is "one million, one hundred forty-seven thousand, eight hundred sixty-three".