978946 has 8 divisors (see below), whose sum is σ = 1508220. Its totient is φ = 476208.

The previous prime is 978931. The next prime is 978947. The reversal of 978946 is 649879.

It can be written as a sum of positive squares in 2 ways, for example, as 664225 + 314721 = 815^2 + 561^2 .

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

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 3 ways as a sum of consecutive naturals, for example, 6541 + ... + 6688.

2⁹⁷⁸⁹⁴⁶ is an apocalyptic number.

978946 is a deficient number, since it is larger than the sum of its proper divisors (529274).

978946 is a wasteful number, since it uses less digits than its factorization.

978946 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13268.

The product of its digits is 108864, while the sum is 43.

The square root of 978946 is about 989.4170000561. The cubic root of 978946 is about 99.2932163375.

The spelling of 978946 in words is "nine hundred seventy-eight thousand, nine hundred forty-six".