978964 has 12 divisors (see below), whose sum is σ = 1957984. Its totient is φ = 419544.

The previous prime is 978947. The next prime is 978973. The reversal of 978964 is 469879.

978964 is an admirable number.

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 978964.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17454 + ... + 17509.

2⁹⁷⁸⁹⁶⁴ is an apocalyptic number.

It is an amenable number.

978964 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

978964 is a wasteful number, since it uses less digits than its factorization.

978964 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34974 (or 34972 counting only the distinct ones).

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

The square root of 978964 is about 989.4260962801. The cubic root of 978964 is about 99.2938249060.

The spelling of 978964 in words is "nine hundred seventy-eight thousand, nine hundred sixty-four".