1138843 has 4 divisors (see below), whose sum is σ = 1152648. Its totient is φ = 1125040.

The previous prime is 1138831. The next prime is 1138849. The reversal of 1138843 is 3488311.

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

It is a cyclic number.

It is not a de Polignac number, because 1138843 - 2¹³ = 1130651 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1138849) 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, 6778 + ... + 6943.

It is an arithmetic number, because the mean of its divisors is an integer number (288162).

2^1138843 is an apocalyptic number.

1138843 is a deficient number, since it is larger than the sum of its proper divisors (13805).

1138843 is an equidigital number, since it uses as much as digits as its factorization.

1138843 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13804.

The product of its digits is 2304, while the sum is 28.

The square root of 1138843 is about 1067.1658727677. The cubic root of 1138843 is about 104.4290399879.

The spelling of 1138843 in words is "one million, one hundred thirty-eight thousand, eight hundred forty-three".