981843 has 8 divisors (see below), whose sum is σ = 1314768. Its totient is φ = 651744.

The previous prime is 981823. The next prime is 981887. The reversal of 981843 is 348189.

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

It is not a de Polignac number, because 981843 - 2⁵ = 981811 is a prime.

It is not an unprimeable number, because it can be changed into a prime (981823) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 321 + ... + 1437.

It is an arithmetic number, because the mean of its divisors is an integer number (164346).

2⁹⁸¹⁸⁴³ is an apocalyptic number.

981843 is a deficient number, since it is larger than the sum of its proper divisors (332925).

981843 is a wasteful number, since it uses less digits than its factorization.

981843 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1413.

The product of its digits is 6912, while the sum is 33.

The square root of 981843 is about 990.8799119974. The cubic root of 981843 is about 99.3910661892.

The spelling of 981843 in words is "nine hundred eighty-one thousand, eight hundred forty-three".