978943 has 8 divisors (see below), whose sum is σ = 1130112. Its totient is φ = 830616.

The previous prime is 978931. The next prime is 978947. The reversal of 978943 is 349879.

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

It is a cyclic number.

It is not a de Polignac number, because 978943 - 2¹⁷ = 847871 is a prime.

It is a Duffinian number.

It is a plaindrome in base 8 and base 16.

It is a zygodrome in base 16.

It is a junction number, because it is equal to n+sod(n) for n = 978896 and 978905.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (978947) 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, 96 + ... + 1402.

It is an arithmetic number, because the mean of its divisors is an integer number (141264).

2⁹⁷⁸⁹⁴³ is an apocalyptic number.

978943 is a deficient number, since it is larger than the sum of its proper divisors (151169).

978943 is a wasteful number, since it uses less digits than its factorization.

978943 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1421.

The product of its digits is 54432, while the sum is 40.

The square root of 978943 is about 989.4154840106. The cubic root of 978943 is about 99.2931149087.

The spelling of 978943 in words is "nine hundred seventy-eight thousand, nine hundred forty-three".