978443 has 8 divisors (see below), whose sum is σ = 1075200. Its totient is φ = 886248.

The previous prime is 978427. The next prime is 978449. The reversal of 978443 is 344879.

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 978443 - 2⁴ = 978427 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (978449) 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, 683 + ... + 1556.

It is an arithmetic number, because the mean of its divisors is an integer number (134400).

2⁹⁷⁸⁴⁴³ is an apocalyptic number.

978443 is a deficient number, since it is larger than the sum of its proper divisors (96757).

978443 is a wasteful number, since it uses less digits than its factorization.

978443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2281.

The product of its digits is 24192, while the sum is 35.

The square root of 978443 is about 989.1627773021. The cubic root of 978443 is about 99.2762072126.

The spelling of 978443 in words is "nine hundred seventy-eight thousand, four hundred forty-three".