1198843 has 4 divisors (see below), whose sum is σ = 1261960. Its totient is φ = 1135728.

The previous prime is 1198819. The next prime is 1198849. The reversal of 1198843 is 3488911.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3488911 = 563 ⋅6197.

It is a cyclic number.

It is not a de Polignac number, because 1198843 - 2⁵ = 1198811 is a prime.

It is a Duffinian number.

1198843 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 1198799 and 1198808.

It is not an unprimeable number, because it can be changed into a prime (1198849) 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, 31530 + ... + 31567.

It is an arithmetic number, because the mean of its divisors is an integer number (315490).

2^1198843 is an apocalyptic number.

1198843 is a deficient number, since it is larger than the sum of its proper divisors (63117).

1198843 is an equidigital number, since it uses as much as digits as its factorization.

1198843 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63116.

The product of its digits is 6912, while the sum is 34.

The square root of 1198843 is about 1094.9168918233. The cubic root of 1198843 is about 106.2316932704.

The spelling of 1198843 in words is "one million, one hundred ninety-eight thousand, eight hundred forty-three".